Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb0853978ae5b19…

MALICIOUS

PDF

78.2 KB Created: 2021-03-28 20:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9d84af4511b44dc9221e4320c6d39fc9 SHA-1: 8c7f83f8bef47b048c7ad005a35abca07c56e8e3 SHA-256: 0eb0853978ae5b19d21267951e028b821a63650c553b8d4ff4ed124f13797abf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

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://midufefew.ru/award?keyword=introduction+to+calculus+volume+3+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374211/normal_6020fd935e661.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/anR5jaL/jirogomusifosuvam.pdfIn PDF document text
    • https://cdn.sqhk.co/wametofenuwo/Wjb7N3z/toon_blast_free_life.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/Dgjihjc/gel_nails_done_near_me_california.pdfIn PDF document text
    • https://cdn.sqhk.co/jupujezaxa/hehiysr/cosmos_flower_tattoo_ideas.pdfIn PDF document text
    • http://liko-sneakers.com/buwakajojixojivunarizusunjqbt.pdfIn PDF document text
    • http://padlamadla.site/fallen_london_beginners_guidevc2kz.pdfIn PDF document text
    • https://cdn.sqhk.co/rilixuzewiv/XiLwvtz/41543503908.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/d3iagdX/ford_sync_3_mobile_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368466/normal_5ff202e08e329.pdfIn PDF document text
    • https://cdn.sqhk.co/jipodipotaj/bgjNKii/33709435568.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/iaEgi7s/super_warrior_arc_all_characters.pdfIn PDF document text
    • http://springtea.space/muzivoporopivakeguwvy4c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424647/normal_601f5f831662f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_600c13a31a86e.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/72bd9685-418c-44fd-be6f-3594e2c2cac5/pathways_phonics_program.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/52396997177.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/sasufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7161ea45-a843-4827-befb-191a17b948cf/dnd_5e_name_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cceddfed-171e-415a-8b4e-574712c9519c/51677488885.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/wosomunetaxosekaxarenu.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_off0000f492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 5460 bytes
SHA-256: 96577d698f3a61c22f712589389cb6412c74312138c6e361446d7171d0d1d56e
font_01_sfnt_off00010714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10714 10620 bytes
SHA-256: e338c1d32b337f882c1920c06274173356e35dc041b01b0d0e566afc4b00f8d3

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