Malicious PDF — malware analysis report

Static analysis result for SHA-256 514e08f32bddee88…

MALICIOUS

PDF

88.3 KB Created: 2021-08-04 23:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1ca4ac69768d0a2d3846a2c64f5fa961 SHA-1: 1b64cdc4d195ba97d375a69a1a57db7b51734873 SHA-256: 514e08f32bddee88e21ff7d4ffb3df1a21b93d7995a899a2ab2ec7520dcfddad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan-like behavior. It functions as a link farm, containing numerous URLs pointing to compromised WordPress uploads and other disposable hosting sites. The primary purpose appears to be directing users to malicious content or phishing pages, leveraging a common tactic of disguising malicious links within seemingly innocuous documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://krisoc.ru/uplcv?utm_term=que+diferencia+existe+entre+oraciones+unimembres+y+bimembres PDF link annotation
    • http://chikatere.com/Upload/files/20248485698.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pabinak.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/gm10oh03ep33d5dpi9snp9med7/42118379981.pdfIn PDF document text
    • http://simonide.org/userfiles/file/31578636048.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/72016314827.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd3f59df25---gikisopebiforejoma.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2e4e3ba04bdd48a57ae4d8ec1d501102/dusibozotedazepizabari.pdfIn PDF document text
    • http://rund.cz/UserFiles/File/65263806403.pdfIn PDF document text
    • https://ntct-dz.com/ckfinder/userfiles/files/mobotobizapinu.pdfIn PDF document text
    • http://bassbasement.org/userfiles/file/20935412305.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924d30b0483---83760919493.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/68010262248.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/cc2d7b25fb7681eda492e29e3f7f4631/6576764916.pdfIn PDF document text
    • https://sambelteri.com/contents//files/gofekuxikawul.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/f66195297c06a68d5042b9171a32fd11/wamilojulukadagudutum.pdfIn PDF document text
    • https://machnik.net/ckfinder/userfiles/files/23810812759.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8e34196d5---dirogexifunatowefomum.pdfIn PDF document text
    • https://autoprofi.ua/userfiles/file/30487442643.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ebd818312---kamavilejiseb.pdfIn PDF document text
    • http://txextremecarts.com/userfiles/file/54257910879.pdfIn PDF document text
    • http://ippon.lv/uploads/File/37494267918.pdfIn PDF document text
    • http://abpaluso.com/upload/file/99166869081.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/56f3cac26413c2ab953a4bb0a20174e4/gidanatugupuz.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/1313e6eea3a09f6dd44cbe07a2f93f96/57108203554.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D3 18904 bytes
SHA-256: 5aae98ae35ac0ddbf514ef923e1498e23ef073ec3d463346ebf23f052f1a370a
font_01_sfnt_off0001206e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1206E 11104 bytes
SHA-256: 16a5f8daf93fd17448994a7cc0b1079bc885bd91748568dd91351725f7650157
font_02_sfnt_off00013a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A76 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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