Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc415d0d0e160bdf…

MALICIOUS

PDF

68.0 KB Created: 2021-06-12 15:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d908eefb1a8764761ebb03942cd3acea SHA-1: d874cb63d158f1ec062624c08c4ba2cc10ef6bdd SHA-256: fc415d0d0e160bdf368e24d38c3197a4a07337580d14d0cf4504f3d373421284
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, suggests a lure related to downloading a game file ('dragon ball z shin budokai 4 ppsspp file download'). The presence of numerous external URIs, many hosted on disposable domains or link farms, further supports a phishing or scam campaign. No scripts were extracted from this sample, but the overall structure and URL patterns are indicative of a malicious PDF designed to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8464

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://laborke.ru/pbw?utm_term=dragon+ball+z+shin+budokai+4+ppsspp+file+download PDF link annotation
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/0fd8815f68497d9.pdfIn PDF document text
    • https://muborite.weebly.com/uploads/1/3/4/4/134442605/lakez.pdfIn PDF document text
    • https://povuwexaruvave.weebly.com/uploads/1/3/4/8/134867965/ludura.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380228/normal_6049e0fb0b09e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414852/normal_5fca5843670b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5fc6128b78aac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408701/normal_60c0485a90385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374002/normal_6023e5eb67961.pdfIn PDF document text
    • https://jezulusawuse.weebly.com/uploads/1/3/4/0/134000263/radewegulef.pdfIn PDF document text
    • https://kubikimo.weebly.com/uploads/1/3/5/3/135393209/d6261ae.pdfIn PDF document text
    • https://wigubidukes.weebly.com/uploads/1/3/1/6/131606651/buropoli_lebomedirewu_zotujuj_vaxit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e06f7d51-857e-44cd-b2d9-947d2b2f70df/57574098589.pdfIn PDF document text
    • http://mumasenekera.pbworks.com/w/file/fetch/144423906/how_do_you_know_when_di2_is_charged.pdfIn PDF document text
    • http://gatunam.pbworks.com/w/file/fetch/144576516/how_do_you_reset_a_vaillant_combi_boiler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/956f50f3-5584-43d3-8622-f4620ad42c09/2006_chrysler_pt_cruiser_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3cd0d11-7116-44a5-93c6-f7c001463583/historia_del_diseo_grafico_meggs_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a27185d-52dc-4d33-a8ca-8b95ae10df6c/29600290203.pdfIn PDF document text
    • http://lulatigono.pbworks.com/f/how_to_use_a_reflector_telescope_for_dummies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e43d9b-f924-4490-97ee-64b3e91a9942/fifty_shades_darker_music_list.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CD 5540 bytes
SHA-256: fa43dfba5d7a93887cf8b6eb36bfbd9c35d954aa90ec13febb1a26428595d663

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