Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecd1a26885aa5919…

MALICIOUS

PDF

97.3 KB Created: 2021-06-27 23:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 3478cf6fa2aa4c2a6f2ec19fde6aaa84 SHA-1: 37c934a071f8a22a95793be2f9b4cc1ed6678304 SHA-256: ecd1a26885aa591924e1d82cf9a8b1b9f2342c02936e809a3977e7da0cd692d7
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a social-engineering lure, instructing the user to install a browser extension or update to view content, a common tactic for malware delivery. The document contains numerous links to compromised websites and disposable hosting, suggesting an attempt to distribute malicious payloads or phish for credentials. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://coretry.ru/uplcv?utm_term=assistant+manager+cv PDF link annotation
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078bff6795c7---laliduw.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/zeduxof.pdfIn PDF document text
    • http://bellsazshihtzu.com/clients/878694/File/5767520675.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/puvudebofariligumetogume.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e591c42a6b---96590118669.pdfIn PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5396b6302---bafidominorinefasufafed.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/21i2hpd73om3hieio498k3g6aa/14164115844.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16077f682ea0b6---73414946794.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/7f3e4egfld6m6u1hhm1trbhrl8/jekaxeredafidilagav.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/59685162242.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16080a97e12f47---bepamofexuwiv.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5e63d6dfe---tilolozukegasuvexor.pdfIn PDF document text
    • https://mkontakt.pl/dat//file/96796458715.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/23becac710ad18ab2dc949857ad702c4/jabavomosaxep.pdfIn PDF document text
    • https://victorybear-info.com/userfiles/files/vefalesasimawafij.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/mt53fkbklijkl8ha3h1lhmn415/xugobakiwowedun.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/ag3n1t6qt4ij8a8vgcus81hqb5/buvufinasidedokigone.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/jevinalabexi.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a1c0480f95---66627139642.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/undmuu5d9947vlrn4267m3n61n/fipagibupamotate.pdfIn PDF document text
    • https://jeneifogaszat.hu/cikkdata/files/97458743851.pdfIn PDF document text
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086efdf87b5f---24209909020.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/ladofedog.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607885cf2c1e1---jewoneke.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/7305c41f1b3339ce06c1d2d11248e5c4/pariwobadiwusuwebidege.pdfIn PDF document text
    • http://ldbell1965.net/clients/85689/File/60791405280.pdfIn PDF document text
    • http://vds-construct.pl/userfiles/file/38329887033.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11985 10456 bytes
SHA-256: cb434401f8a4818f054d37c0486c7675f880f4e67da9bc74607ce903560550cb
font_01_sfnt_off00013143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13143 17924 bytes
SHA-256: 1889bc2ca257012f7b3a1212578ccf7c70708a93bb0d66af3248ec658d4b19c7
font_02_sfnt_off00016001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16001 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.