Malicious PDF — malware analysis report

Static analysis result for SHA-256 30920e28518a9da6…

MALICIOUS

PDF

76.4 KB Created: 2021-04-22 00:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 243d69db9389f87f2ecfdf390c34979d SHA-1: 5ab84cf9fb1b7d33f8a7490a4f5736eeca0c2c91 SHA-256: 30920e28518a9da6ce79751137c45d5309c1f17a426d5107a49eebce18b1c24e
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 and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://soxebez.ru/strik?utm_term=monster+2014+korean+movie+download PDF link annotation
    • http://selolaz.66ghz.com/xetomakuvonesegepolalajaw.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/Aghdij2/who_is_brain_teasers_and_riddles_level_50.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/totin_chip_and_firemn_chit_requirements.pdfIn PDF document text
    • http://tulumiv.medianewsonline.com/juwadi.pdfIn PDF document text
    • https://cdn.sqhk.co/kowalaxu/Ao9ggVg/zepewekitiwavibijowilo.pdfIn PDF document text
    • http://pifovabu.getenjoyment.net/3052905638.pdfIn PDF document text
    • http://jurofenopoxu.iblogger.org/rofiwepoxozejuvagiziliram.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/ihLEwhf/fuzumifuminulelu.pdfIn PDF document text
    • http://junujagar.iblogger.org/59490729380.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://69df74eb-9f83-488d-97bb-abb55063df61.filesusr.com/ugd/f34323_5e370398bd3b4a6cb55b4825a6e26f18.pdf?index=trueIn PDF document text
    • http://wedalavunobuwe.rf.gd/captain_america_winter_soldier_comic.pdfIn PDF document text
    • http://majaposudirux.epizy.com/ccna_200_125_syllabus.pdfIn PDF document text
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_4a046ec6d19547bfacfe5ff3fd4ee3f8.pdf?index=trueIn PDF document text
    • http://kusababi.onlinewebshop.net/pomezixonuz.pdfIn PDF document text
    • http://vufobaratoja.epizy.com/49108617902.pdfIn PDF document text
    • https://cda84be5-0c54-4c05-8389-97bb004c798d.filesusr.com/ugd/fa9f00_dddbde35b08c4fc59b235112013092c3.pdf?index=trueIn PDF document text
    • http://lakuxizutigevo.rf.gd/7258156153.pdfIn PDF document text
    • http://sokuwijezelikut.rf.gd/epfo_online_claim_procedure.pdfIn PDF document text
    • http://lelikerakovet.atwebpages.com/valores_morales_y_eticos.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC31 5604 bytes
SHA-256: 9501ab8ecd082dd89a5ef9b061845bdae6cd9d4a54dafb66fefeb1937d053d22
font_01_sfnt_off0000ff56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF56 10900 bytes
SHA-256: c8726632b4890cc2fd7ca8cf5a8ffe7d5be5469bad33155c9df6b034476f3366

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