Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2fa19e0e0d2acb…

MALICIOUS

PDF

71.9 KB Created: 2021-08-31 15:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 5b5a5bd1b4975d7e8c219c73d6ad1a7b SHA-1: f1753edd26c64f6ff24b0ab03a3c59b3b1410d0b SHA-256: fe2fa19e0e0d2acbaea434f04cfdb02f65f17c628e18a8523c6ae8bc3f29d3a2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various websites, many of which appear to be compromised WordPress installations or disposable hosting. The primary purpose seems to be redirecting users to potentially harmful content, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://pixomot.ru/uplcv?utm_term=answer+any+science+question PDF link annotation
    • https://alshaabcoop.com/userfiles/file/8159523788.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7e8bd572d6---kijanebuvuwuxotebewu.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160756891f28ab---27000061325.pdfIn PDF document text
    • http://ginzaoakland.com/uploads/files/wodeki.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/bbhibrjjssmuen7o32bid9kvs4/25763983426.pdfIn PDF document text
    • http://lueckerreunion2020.com/clients/e/eb/eba09433058400eda594a485f9004317/File/35378253644.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/348cba14b55436b5a243646343bfc560/68393246554.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/jalopikowaguladid.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/a514923fa4dd158f1412b11bcaa3437c/nevevovoxemi.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160ae45ed18197---21241226179.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b94d08a8f64---xijiwuzegisotoponupeb.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16123765cd0288---munogosuwebojaxurababato.pdfIn PDF document text
    • https://pacie.vn/web/uploads/files/domudalesozufina.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/9914e4b25e28eccc9ddc512c1db38cdc/83034452985.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/82637721514.pdfIn PDF document text
    • http://stellar.ru/ckfinder/userfiles/files/fizabifizanowubaronaj.pdfIn PDF document text
    • http://builderall.info/userfiles/file/87607355413.pdfIn PDF document text
    • http://kehlux.lu/userfiles/files/43388626982.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/boxanemapezikiveje.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/cd4c6127dbe86c6b8ef1fdeadfdeb2d6/lomixebemawakebizovegan.pdfIn PDF document text
    • http://mileschapelcme.org/clients/9/9b/9b85db73e8c1d5ae3bc18b6db4f26039/File/vopudaxir.pdfIn PDF document text
    • https://beauty-full.ru/uploads/files/dojileparu.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160767a2a1189a---70903328591.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_off0000b987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB987 10604 bytes
SHA-256: c280a813065a453e829c5cde03246a137d33aa55cb6f7d3a173f64292cd98701
font_01_sfnt_off0000d20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20C 15888 bytes
SHA-256: 091093233e3c76d91b339610345ec6944bdf7089813942ef95bddd8faca13e8d
font_02_sfnt_off0000fa52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA52 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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