Malicious PDF — malware analysis report

Static analysis result for SHA-256 33481170afe838ad…

MALICIOUS

PDF

77.5 KB Created: 2021-02-22 11:16:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 05827901e8852f6a394f0041fbea4be2 SHA-1: 9e881d11cd9b15fa753ad89163519c434544c55c SHA-256: 33481170afe838ad2b8450ce464cfe979b923c80db0705d6a03c4608eafaafd4
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://druttle.ru/123?utm_term=lawn+boy+riding+mower+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467325/normal_6013f48ba5eb1.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/50884.pdfIn PDF document text
    • http://ledy66.net/nemokobo6ct.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394071/normal_5ff88db322988.pdfIn PDF document text
    • http://beach-fruit.fun/kesififozewizurimuritgq887.pdfIn PDF document text
    • http://ebay-coupon.ru/determination_of_acrylamide_in_potato_chips_and_crisps_by_high-performance_liquid_chromatographyxtwh4.pdfIn PDF document text
    • http://bio-ita.fun/naroxuwufifumofodiwivanubk54a.pdfIn PDF document text
    • http://daravto18.ru/battlefield_1_planes_guidejmw72.pdfIn PDF document text
    • http://sungo1.space/wotamadipazog10myn.pdfIn PDF document text
    • https://kofuwirobunugob.weebly.com/uploads/1/3/4/3/134318534/rotope_foxatasexufeg_pananos_xelasowebub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369923/normal_5fff28049c0e7.pdfIn PDF document text
    • http://imkl-checker.com/59845280007bnns2.pdfIn PDF document text
    • http://totalcreditcheck.info/basic_models_and_methodologies_of_the_software_development_life_cycleckx69.pdfIn PDF document text
    • http://idealicaitalia.website/dewalt_dcd796d2_combi_drill_18v_xr_brushless_compact_lithium-ionzz75g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495391/normal_5fda121b46d6a.pdfIn PDF document text
    • https://fikoroviv.weebly.com/uploads/1/3/0/7/130740338/sotivikesekogezesezo.pdfIn PDF document text
    • https://femixazate.weebly.com/uploads/1/3/4/3/134363246/f26b40d764a30.pdfIn PDF document text
    • http://aycotoro6.xyz/screen_timeout_settings_keep_changingctlim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427501/normal_5fe65fe071469.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/warfarin_coumadin_dosing_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/autoridad_de_acueductos_y_alcantarillados_reportar_averias.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/fukamomini.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_off0000f19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19B 5500 bytes
SHA-256: ea39c0ac998b6be7273a394006991d22724788fc7aecb1bcf3b92500be02db96
font_01_sfnt_off00010459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10459 10704 bytes
SHA-256: 9e515dd3504eaf2435fb4f1cba10217a5f03bd5bb71d2151d44a5885c458ae68

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