Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac6a5c06a11af70…

MALICIOUS

PDF

81.8 KB Created: 2021-09-05 00:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: decd4e6c7138c4a97d27fed73960a83d SHA-1: 20a726320d5f06f6fe21262297eacab72a914fa3 SHA-256: fac6a5c06a11af705ca0cd6fdda728bfd0e05187498f7628920b7a8b3688e08e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate that the PDF is part of a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malware or conduct phishing. The presence of a callback lure further supports a phishing or scam pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://philabc.ru/uplcv?utm_term=economic+analysis+for+business+decisions+pdf+pune+university PDF link annotation
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/30eb842ccca11e39338f602a2f9996f3/ritokeladovipemiwexanude.pdfIn PDF document text
    • http://www.msjcongregation.org/www/js/ckfinder/userfiles/files/65989214831.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b326581b11b---majoloretegobeburibe.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16133b3fc1e03b---19299388281.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16098aaaa1acb3---nixatekulegivuxuwarazujup.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/9a2699d5992c96108c455994dfff99d3/pefizuveropazobesikef.pdfIn PDF document text
    • http://bruisedreedfoundation.org/clients/4/4d/4d9d7eec3bf3a09fa0457ace138f6a4e/File/nojileguzubobebujoz.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/917c067007a3ac6f5cd1a704367c555a/zibejutu.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcbbcf271e6---suxuzafonemaxe.pdfIn PDF document text
    • http://feriaalainversa.com/uploaded/files/zopesejejumopuwopigo.pdfIn PDF document text
    • http://cmepta.com/clients/7/74/74ea2f63c40943e6497cbf70acaf7c81/File/dukonagefeminugudotuj.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a1dfba9ea10---26652635171.pdfIn PDF document text
    • http://phongthuydotho.vn/upload/files/81664897644.pdfIn PDF document text
    • http://105chers.netsociality.com/upload/files/verof.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/wekanuvapomegufen.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/7e6d68a1d78672353c2ed59997f8779c/zomepegujugo.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779c801e68a---40832235479.pdfIn PDF document text
    • http://baltic-rt.ru/ckfinder/userfiles/files/1252394973.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/48nqt1d1tefob8cq6cp91ecndp/ninefozo.pdfIn PDF document text
    • http://vo23.ru/upload/file/mubewitiwu.pdfIn PDF document text
    • https://chezgregoire.fr/userfiles/20014525115.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a135c42cc1f---kumelaziwede.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/30bb1e902b1800a877f7d1a867f1d3fb/betufoj.pdfIn PDF document text
    • https://kstraders.com/userfiles/file/99464529566.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/96816753001.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/62216983189.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_off0000db1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF333 11184 bytes
SHA-256: f04106ae6c831b23166deb64131d77eddbc3456db71f5ab816cfc418e491e674
font_02_sfnt_off00010d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D25 17020 bytes
SHA-256: 1d557f84f2f1bb62759da8cd9abe0be30c411d3d4d1d6feb8714cbf76fb7bcaf

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