Malicious PDF — malware analysis report

Static analysis result for SHA-256 69745ab183bf4190…

MALICIOUS

PDF

90.2 KB Created: 2021-07-28 08:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7e585bf9fef1dde0ab1b4352ffa6109e SHA-1: 6257a50cf7940ea7496b1de54e2b7cacb4e3ecae SHA-256: 69745ab183bf41907ed90fed21e7cc0aa440d82c41e330d7d5b84778905c4b36
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads, suggesting a link farm or phishing lure. The 'SE_CALLBACK_LURE' heuristic further supports a phishing or scam pretext. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/1c6f38a97a76de34011c7095c97d7d8b/xugizix.pdf In PDF document text
    • https://playerpress.com/ckfinder/userfiles/files/86812314433.pdfIn PDF document text
    • https://chaletsuenodesol.de/files/67484556607.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e62505b1f76---goruvupajimenogamo.pdfIn PDF document text
    • http://gesundimjob.at/images/content/files/fifilemuxu.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/t8838di1ugd8bfple8a18gi8di/90036192323.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608562c4d625c---takaxuboma.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/b7d776f4de7e87a56452cfd7416699e3/rotogujararibitar.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/vusuba.pdfIn PDF document text
    • http://ashioke.com/images/library/File/72717941757.pdfIn PDF document text
    • http://waelfawzy.com/userfiles/file/mojivopefuzusaxupira.pdfIn PDF document text
    • https://mfdesign.hu/files/file/giriluripebeboxerixapi.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/06f154fa0220b881388f31ee4923b07f/bigoxan.pdfIn PDF document text
    • https://eltonltd.ru/sites/default/files/uploads/gapilivobexizesatukesero.pdfIn PDF document text
    • http://tajeer.co/userfiles/file/zikewox.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/80352522459.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/87e4475c78e7d6873dcdce06331401e9/42909020700.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160727591c0d35---35384531618.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/9kgb5bis4oj2vs8uuh3eqi86id/jadaxijadegudekubowuze.pdfIn PDF document text
    • http://cathyknightwaite.com/ckfinder/userfiles/files/bulef.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/d147efb3f0b5d4f1c465642e0ba1eb15/90295710591.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608214e56ed35---15066278987.pdfIn PDF document text
    • https://geneticapanama.com/userfiles/file/zugori.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=what+is+the+life+cycle+of+a+sharkPDF 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_off0000fdd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000115e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E9 16940 bytes
SHA-256: bfbaf6eeb63ee6bf70a9d568d89b30652f1a4083b3828d02ae0233f759dbf742
font_02_sfnt_off000141bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141BD 10528 bytes
SHA-256: 86b28d0686051b05ac893a98f34b2989003abbc5a68935e918de70c3ed1d272c

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