Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd38bcaf64b4123f…

MALICIOUS

PDF

79.5 KB Created: 2021-09-07 13:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e17b40698c75d98ba85e053db0a5fadd SHA-1: 6a3a7f480ab4f8a6a9cf2d869eecd4cbfa17aff0 SHA-256: bd38bcaf64b4123fe2d48934e8304012b3e09c4722be3b0e1c51a8385f5bdf63
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://makeswebsites.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/92820210438.pdf In PDF document text
    • https://inprovitcolombia.com/ckfinder/userfiles/files/jexozopodupex.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/98729493108.pdfIn PDF document text
    • http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/83772288152.pdfIn PDF document text
    • http://parvazyab.net/basefile/api203/files/pixubotavorunomovoxesepik.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/butumig.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ace094e1297---rumomatutapobajepekaxoxa.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/1l8r1bg0gciftgi5rdegk0apr9/80942732895.pdfIn PDF document text
    • http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/72683157242.pdfIn PDF document text
    • http://dydlhx.com/upfiles/file///26796761057.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f86d333223---wadasukobaseg.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/sesuzirekure.pdfIn PDF document text
    • http://fitviewer.biz/files/file/73652663995.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a22654e0ae6---17871473482.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/86bc09e9e45c4e1c6bfcd1574cc0d0c9/1708529062.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dabe724ff7---fewujufigejezogidanekutaj.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/npjng248u2rogr6jq4cvhh2ec1/wajawek.pdfIn PDF document text
    • http://distributoram.com/files/file/7186863951.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/f1a98d41691a4bcea37b6eb3b62cba85/42806586226.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/48122021491.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/c010a3505kh6eq5u3q3sppk41f/savosu.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/pejilonebobetoto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=upload+pdf+to+google+sitesPDF 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_off0000d56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56A 16840 bytes
SHA-256: 0d082f3516849c724fb1ddc8681cb9f2be684efb23ebb896cc85cf9d7e206b58
font_01_sfnt_off000100e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F8 10476 bytes
SHA-256: f5852538ea4755fa068fd8bf31ba94f7943d73079595ecf6f5d7c83e746edf5e

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