Malicious PDF — malware analysis report

Static analysis result for SHA-256 307afcbd6ff5e2f2…

MALICIOUS

PDF

114.8 KB Created: 2021-07-17 12:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ad909fc7c792648ade3f2ff0c91eeba0 SHA-1: 87110b1e23d6ea16fb353de999a4876ecf2d5741 SHA-256: 307afcbd6ff5e2f27d5a32eff073a02f53c89f331d47ddc2edec4bcf99ea176f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was flagged by multiple heuristics as malicious, including a specific ML classifier and ClamAV detection. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicates the document's content is designed to deceive users with fake lottery or prize information, a common tactic in advance-fee fraud. The numerous embedded URLs, many pointing to compromised CMS uploads, suggest a distribution network for this scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/fec684051e3ca49e8f45d238684e8147/mipexuwigunuzidozami.pdf In PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/3fba5f3c7dc489b6a6fb7638f3ec3242/fokelimo.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/pj059nn1bmu8l9p29rvqpsi8bi/21584116315.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/fibelutitubofepukone.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909bc45b180---jovibawelinow.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/rufedujunazijimokepita.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c49a03b6013---51995879263.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/qd6j8k78l412h7gadrl3igeb14/51791301321.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/vuzuforerakikadofe.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/nuworavenadelulesan.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c0293f1cb87---koninusowov.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8d58c2129---lelaliderot.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/f267c8791505cdb8d2b94b954e4669b9/dubarezixukuxoru.pdfIn PDF document text
    • http://fhhsclassof70.com/clients/4/42/42ce21dc30e429aa976ba070b22ccf93/File/65264918415.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/ab6013cabc6e3034b65c56790c943f4e/52306771767.pdfIn PDF document text
    • http://josephlillianmorrisfamily.com/clients/59960/File/42867821548.pdfIn PDF document text
    • http://ipmarketing.net/userfiles/file/16595350773.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e451da70272---vofup.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/c2747c356eb33ae3045dda47efb5008d/8771122258.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/91128f3515d87df987b22aabc3c85f13/gifasup.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1df8e0feb---navofomebuzutakolerejup.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/tcb6dpin9i0hmp5pb7bnef0ems/kebatexudalovuwidefa.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/5c99dcf48e41828b413c6970c558ed5c/58065920520.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=ultimate+10k+giveawayPDF 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_off00015eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EEB 10500 bytes
SHA-256: 8a8fb1e66eaad85ce775973e27f308f944d74107e9cb2458680d02f739f69ed6
font_01_sfnt_off000176e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176E6 18160 bytes
SHA-256: 6cac0b5cf710870e5c9d008fd54daf2180c5cb5d51b0a1916f633b74418ea57c
font_02_sfnt_off0001a5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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