Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a18256b7dfdc27…

MALICIOUS

PDF

83.5 KB Created: 2021-04-03 19:51:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 264ac06360d13fe9985205a84996d89f SHA-1: 130f81e9e3cbe30872a72ffed23a708abf79ecd5 SHA-256: 30a18256b7dfdc279948e12169484b4a658f8489ccb4a2200789a63f73402c08
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 0.9998

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://golowaki.ru/strik?utm_term=what+age+rating+is+a+christmas+carol PDF link annotation
    • https://ninobajoxakatud.weebly.com/uploads/1/3/4/7/134702009/9c9e675929.pdfIn PDF document text
    • https://kunolutupevuj.weebly.com/uploads/1/3/4/7/134772201/xonenu_zabufunuvawu_bizuvafitam_woxibaniw.pdfIn PDF document text
    • http://indonesia2health.online/2489004761815s4v.pdfIn PDF document text
    • https://kesizimi.weebly.com/uploads/1/3/1/3/131398366/xagogetoxatenepu.pdfIn PDF document text
    • https://suxapenogabako.weebly.com/uploads/1/3/4/6/134602080/9048377.pdfIn PDF document text
    • https://weziriditovi.weebly.com/uploads/1/3/4/1/134108838/jemavupesiposu.pdfIn PDF document text
    • https://komanogorolelew.weebly.com/uploads/1/3/1/3/131380356/4272b3a11b327.pdfIn PDF document text
    • http://repair-foto.ru/fundamentos_de_microbiologia_de_alimwlud8.pdfIn PDF document text
    • http://ompala.store/free_tenancy_agreement_templatee4gld.pdfIn PDF document text
    • http://premium-cinema.com/69594990684bi67s.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/86069469023.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gaxilitexu.onlinewebshop.net/which_garmin_handheld_gps_is_best.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c540b7cc-adca-4734-b59d-efa85ba55d53/13398083178.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccb076e4-0fe8-40e2-a419-802339aebb76/a_q_se_debe_el_dolor_de_mandibula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75ffe4d-6c37-4747-a88e-60d83d8ed2b9/48257498223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc3e7ac5-7482-4a40-8b10-cd373a68bb78/porexapogemapep.pdfIn PDF document text
    • http://tevaluzax.atwebpages.com/23902389927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7943febd-7ffb-4456-b13c-64ad0a977613/siduguginuwoxa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC4 5016 bytes
SHA-256: cade77adbdb86fa62c8501d34e6f9a9a6498f26e51110fe9d4c28758a75da374
font_01_sfnt_off00010da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA9 10772 bytes
SHA-256: e02e88a13e8f65768a77b7cb69f894f6d5592b52999a1387449c38d6d303b609
font_02_sfnt_off000132b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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