Malicious PDF — malware analysis report

Static analysis result for SHA-256 514202a5b46759a2…

MALICIOUS

PDF

84.9 KB Created: 2021-06-28 22:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: eb3f3e84dc89df5bbd265cbed49f688b SHA-1: d4e2f79302196c78792bb50b887075c7cfe9518b SHA-256: 514202a5b46759a2134a8262bc08c0163d1f3a15a9bc57b8343d74f4b35d5986
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, likely intended to trick users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the structure and embedded URLs suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://huntic.ru/uplcv?utm_term=difference+between+plant+and+animal+tissue PDF link annotation
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/0c290868d4b22cb6d6d9a0744ee8b042/81564245778.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/s1cnfd3jfjpff6ns4dtct7tsa6/bikoxi.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/xonunuluzupiwidoxubozafab.pdfIn PDF document text
    • http://bbbswalkforkids.com/clients/c/cf/cf8d0549bdc9bbdffca8bc0db9808b96/File/dezili.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc33fc3bee8---19911307786.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160752cb24c655---88714564789.pdfIn PDF document text
    • http://hykylalumni.org/userfiles/rozakuwo.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/46561770093.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a7522904f32---12276346808.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1609747811048d---48428200310.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/e82pv8q72dqhjm2lkvu05n90qh/9912025635.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/e43cd5f1eda32f3edf2b833ae8fe24ed/57758041147.pdfIn PDF document text
    • http://miroslaws.com/ckfinder/userfiles/files/30628489601.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/7qubknt5j27vkv9r5pef46ovq5/44230810240.pdfIn PDF document text
    • http://babamoleskine.com/files/file/jukejukafogebabudoremozag.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/met3i0k2s0i0boflr9plpj2odu/kuxinepeponurubajojubabin.pdfIn PDF document text
    • http://usarsenal.it/userfiles/files/fojofumixetudamox.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/wajeverodirebidarotazemup.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/0b9aeccaae06e95aa53373dc3eb6c069/wulivufovumigalukotag.pdfIn PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3bc55572f---27642759081.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bb2cbf006---75984884490.pdfPDF link annotation
    • https://bursac.net/userfiles/file/26826693055.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_off0000eaad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000102bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BF 16308 bytes
SHA-256: 5573f4c22a923de60e80a4aa8973c7e7722b8020fe49e5d2cc2d0c3b5379813b
font_02_sfnt_off00012cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD8 10988 bytes
SHA-256: fdb67089f9b919a8bb3dbc93a87c38fc920df2244b756abe068a1d51f0cf6f5d