Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1dfe77c1cb6a53…

MALICIOUS

PDF

86.8 KB Created: 2021-08-02 06:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d8ed627cde830df3c607c1e1b3fdda42 SHA-1: 50d413c645aab850d831b93a5b4086282e959afe SHA-256: fb1dfe77c1cb6a53a4d89f22ce9dd4d037bfa9233bcc640602e7ec0d4b151257
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a password-protected archive lure. Multiple heuristics indicate the PDF contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to host and distribute malicious files. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160972399cbac5---bezilepapajenevadi.pdf In PDF document text
    • https://aawyx.com/sites/default/imageuser/file/24598588303.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/bbf7caeabe2a887200b8c2c17472916b/jejudinawomexaxi.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a9546e2b1---lululixovexelaped.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160879e742cd63---25168208411.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/86474502075.pdfIn PDF document text
    • https://roomart.uz/ckfinder/userfiles/files/10925987643.pdfIn PDF document text
    • http://crediramasrl.it/public/file/pugolofariwowifo.pdfIn PDF document text
    • https://ehotelgateway.com/bot/ckfinder/uf/files/xojidexojizixuma.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/8eb87d772de5ae8fb5fd658aa9f5292a/jafekajinif.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609926671eeda---morugav.pdfIn PDF document text
    • https://cafemocion.com/userfiles/file/87893095451.pdfIn PDF document text
    • http://jvcc.cn/ckfinder/userfiles/files/210713230731271632y3vgk.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/61597951805.pdfIn PDF document text
    • https://privatecambodiatour.com/userfiles/file/fisumozibosipawezo.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd07a5e3636---34097366898.pdfIn PDF document text
    • http://busanpc1.com/upload/fckeditor/file/jowax.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/027e4ce128650a0af88c539e2f3c3b3b/80296096684.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/plkk8fsuhse8fnhfgjb0p2hei6/jixuwavob.pdfIn PDF document text
    • https://mangonebike.com/uploads/file/vekalawo.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098364a490ee---35491229888.pdfIn PDF document text
    • http://chinalabware.net/d/files/tamurasoba.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc214d8510---dagekuzotagowujorejom.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfcd9b303f---binazosax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=configurar+control+directv+un+1PDF 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_off0000ec87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC87 17996 bytes
SHA-256: f45121b92e3de3683fe628b5db6f4011ba2a1c40cf315782bda2e751a0d0f554
font_01_sfnt_off00011abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000132d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132D6 10732 bytes
SHA-256: 6fcccd64e8450bb2976b302c2ee4abfa40f28a083699ab3fa52f1f1db4918edb