Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dd20de32a18d49…

MALICIOUS

PDF

87.4 KB Created: 2021-07-07 01:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 325d6f2d28aca7c40be87ed26b563bcb SHA-1: d834229706a2d02426c16bef9286ddb53ef87314 SHA-256: 46dd20de32a18d49d45057f753524ca2dc691f37df81fbf502a8ea2b0e9aef5b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2548

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/ca3c04b1236161737e2fcedabdffa1e9/bajusefe.pdf In PDF document text
    • https://bharatbiodiesel.com/userfiles/file/28663767890.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/fc21f455ee59e7bf31283bd2cfc500a4/wefodaxaked.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/d8a6d6e8ffc4e874dd31f818f4d38cc2/87656017181.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/76416443696.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b17ac9b2e7c---samegeviwepabadapokij.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/17eeda63690b759d37776cb1d9ad382b/14557536458.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/wakevinasozotujaxoru.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/160a5641556deb17bf66fea9b9cb90f9/62919979271.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5711ce6e9---14638849328.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/62fah52nvee0nflu0a5o8gafp1/vatonipijivuxu.pdfIn PDF document text
    • http://inlovehuahin.com/file_media/file_image/file/84134857530.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/70743271441.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/7c1a19e2245d166ffe01e1b87e15f0cc/tezimuwovibowepinegeza.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/hn0vm8nsp3n5ie95qj073bt6gv/boxanavexivoguj.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080caa31c8eb---66044945082.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890712cd555---pewoviz.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/07fe2eee783d9f698d3e76f78f7514e0/xivamimazikufag.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/dagiduwu.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/6nlkg8km93k3a54f37mkvheb53/64477756905.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/5779999dd7a153868f54f596d9a3fd49/vogonodagasixob.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c09fb4bb375---72261235639.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5012cad84---vajomujofenujixu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=most+commonly+used+opioidsPDF link annotation
    • 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_off0000fd25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD25 10620 bytes
SHA-256: ed4a1fa208528a45f8431b749fb82ad36fabba15212ab86a8ad1ce563df631e3
font_01_sfnt_off00011570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11570 17416 bytes
SHA-256: ae40605b0326c6d09c1669c8c2ebdfc5460c924ff6a2ac3952e97cdb8b382e7f
font_02_sfnt_off00014320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14320 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.