Malicious PDF — malware analysis report

Static analysis result for SHA-256 e706064e13a7c006…

MALICIOUS

PDF

72.4 KB Created: 2021-09-17 14:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6109945a1b5f852a2053aea0564c626c SHA-1: dc9ba928d3cef6e4c0f7c8b920c0d52e739d05db SHA-256: e706064e13a7c006a0d4aff262e2f7e60c4ae5e2157c52e5e623f2b8551f113a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm and a callback phishing lure, attempting to trick users into contacting a fraudulent entity. While no scripts were directly extracted, the PDF structure and embedded links suggest it is designed to redirect users to malicious sites or initiate fraudulent phone calls.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://jdjcnc.com/upfolder/e/files/20210917054502.pdf In PDF document text
    • http://thomasgearon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sadagelulabofojarobifoko.pdfIn PDF document text
    • https://fullmagicweekend.com/ckfinder/userfiles/files/70866950.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613cddebbc78c---204640734.pdfIn PDF document text
    • http://highdeal.linkeo.net/ckfinder/userfiles/files/7307457594.pdfIn PDF document text
    • http://gowowdeli.com/uploads/files/liwexekatatekofu.pdfIn PDF document text
    • http://kompassztuki.pl/Image/files/kasemovudofipen.pdfIn PDF document text
    • https://ihappywash.com/uploads/files/202109122013559611.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/merixi.pdfIn PDF document text
    • http://locum-system.pl/userfiles/file/21136846487.pdfIn PDF document text
    • https://gfwofficial.com/ck_imgs/files/jipuxexifuxug.pdfIn PDF document text
    • http://hkwwta.org/userfiles/79496822929.pdfIn PDF document text
    • https://www.hotelrestaurantmacarena.fr/ckfinder/userfiles/files/limonilebenosux.pdfIn PDF document text
    • http://azbuka-d.ru/ckfinder/userfiles/files/792116298.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e7cc310799---76966232658.pdfIn PDF document text
    • https://km2804.com/ckupload/files/91820216294.pdfIn PDF document text
    • https://birutelorasin.com/contents/files/nepow.pdfIn PDF document text
    • https://yuktogel.com/contents/files/24821702962.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/11276c0b19724b9fa84af69690b391ea/69632323567.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/xiwageligojuluvipawuzid.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/26863566468.pdfIn PDF document text
    • https://actionsporting.com/userfiles/files/givadun.pdfIn PDF document text
    • https://piti.leaddeehub.com/userfiles/files/57230235107.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/10277390067.pdfIn PDF document text
    • http://yavuzselimvakfi.org/resimler/site/files/voxasiravas.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4a6583b19---7815718139.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=the+boss+wife+1986+moviePDF link annotation
    • 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_off0000bab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB9 10820 bytes
SHA-256: 008a21e812c5582e8f88bfe702916c2786a643f86501db6bd2bef550838bd213
font_01_sfnt_off0000d3bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BC 16456 bytes
SHA-256: 1d9f573baa501c4b8bef0188cc190b2117615469bb0cb2bbd79e4d1a9c80bb84
font_02_sfnt_off0000fd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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