Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6b26e5638c74fa…

MALICIOUS

PDF

140.9 KB Created: 2021-07-23 14:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4b5c3bfa3245ee6db20809f1316b12b2 SHA-1: a871f4e181852bbbcee7e3a8d5e83f069eb88eed SHA-256: fe6b26e5638c74fab909c97bfea502bbf2c0108376c0656c981369eacaa3c78f
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a link farm pointing to compromised WordPress upload storage, suggesting it's designed to redirect users to malicious content. The presence of 'SE_INVOICE_LURE' and 'SE_PAYMENT_REDIRECT_LURE' heuristics indicates the document's content is likely a deceptive lure related to payments or invoices.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f21a95ec7---koxipetogukibukutazud.pdf In PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bf55546be9d---89193996525.pdfIn PDF document text
    • http://baggiez.net/userfiles/file/9156958096.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750190cd4f1---lakuset.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/rd55gvuikto1lq2o3iff1jpeup/832223445.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/24551a5b0c7902d08e886ab5e0efa05d/motuwiwepajubowixotubu.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/mugonazed.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b8d01a4b8fa---fagetab.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/eadb8e8fbdbae56768e3ab047ba67800/jegoku.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/5f0d7afa30a6ca05f94033dd51ac03df/sokajusofogogiki.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/8f480538f389b1bccf2c3626a852c3c1/koxewomilukif.pdfIn PDF document text
    • http://fritz-fahrlaender.ch/download/mopujobix.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/xekokojegiminofuro.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2dd159ea53---88072963341.pdfIn PDF document text
    • http://www.motorradfreunde-toggenburg.ch/up/files/boxobodupemozabolus.pdfIn PDF document text
    • http://quiltingacademy.info/fckeditor/userfiles/file/89675772239.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/01f46e811bd8ec81e5b0a6680d620f36/52765118360.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/d3e414bbc1c183d37dc6731e8537dc3b/79090222565.pdfIn PDF document text
    • http://clarasonic.com/upload/file/jodepofurus.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/540tt076kapdiddlae37074pj2/terenibavoru.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/kejarovisigad.pdfIn PDF document text
    • http://loaamtran.vn/files/usersfiles/files/dufeguborasojo.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/poxivimu.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072498f077d9---vaninisakupokatukaxodox.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/cc063e12272e60ab81ddeea9aa980f30/18103985001.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=national+lottery+authority+formsPDF 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_off0001c4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C4A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001dcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DCB7 18080 bytes
SHA-256: 20c1d00666dbadc5ee91582db574b4192bfe75117661cc419f2bfb38e73e82b8
font_02_sfnt_off00020c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20C2B 10668 bytes
SHA-256: 26a66f62b6b9041ab6853adff6982625c8e9828858b26b8b20e1803853056a40

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