Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c2ab3e35ef99f0…

MALICIOUS

PDF

78.1 KB Created: 2021-05-02 22:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 95049bd692b10166ffed46c156eb5b59 SHA-1: 9a2c97362a990ac9e2550cd663f70ed677a3d411 SHA-256: 62c2ab3e35ef99f091b4938b87d810b15ec2989b67d3ed7369b8da5a3b2663cb
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://vilenefex.ru/strik?utm_term=how+to+turn+on+cuisinart+keurig PDF link annotation
    • https://lojumokixawivi.weebly.com/uploads/1/3/4/3/134370302/xutapiwepigusuv.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/jgieWUW/bike_racing_free_motorcycle_game_online_games.pdfIn PDF document text
    • https://xewomilofapo.weebly.com/uploads/1/3/4/8/134878854/rafomaf-sifunafawevopi-sozogevit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_601eeb9cccde3.pdfIn PDF document text
    • http://bestplacefor.rest/m_a_s_t_ki_full_form65iop.pdfIn PDF document text
    • http://allerop.xyz/lezojeresopejepewetarejurtrw.pdfIn PDF document text
    • http://cmbespaceclient.xyz/87405883293gnax0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477916/normal_5fd34d5b245a4.pdfIn PDF document text
    • https://cdn.sqhk.co/palugalanivo/jdXyhg4/bichagadu_songs_please_come.pdfIn PDF document text
    • http://halfraire.xyz/gagezunokcpn2r.pdfIn PDF document text
    • https://cdn.sqhk.co/fojupigek/xIpFibL/kindle_fire_hdx_3rd_generation_manual.pdfIn PDF document text
    • http://bupimobim.sportsontheweb.net/wafojirotox.pdfIn PDF document text
    • https://pesenulowujef.weebly.com/uploads/1/3/5/3/135325158/tasiresubor-misoxe.pdfIn PDF document text
    • https://cdn.sqhk.co/daxozazon/hjcp4hf/44631887188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5fdbdc9c69c8f.pdfIn PDF document text
    • http://raicen.com/beldray_airgility_max_manualo92k6.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/nilafafakem/rurowitunonusosi.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/c_for_dummies_5th_edition.pdfIn PDF document text
    • http://nofolimuri.myartsonline.com/jigux.pdfIn PDF document text
    • http://tuparibuju.atwebpages.com/66639045473.pdfIn PDF document text
    • http://kogotiru.myartsonline.com/afterburn_sylvia_day_portugues.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/generator_excitation_system.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF214 5052 bytes
SHA-256: 9a28cb30f985fd0200c29d837b6e6117fe720769850c07d01712ac36eff0dfb3
font_01_sfnt_off00010369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10369 11656 bytes
SHA-256: cc24c98fc2a64c1c4af7645170e451b865755b4f63797ba598900897148e2eac

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