Malicious PDF — malware analysis report

Static analysis result for SHA-256 132e76f6fe5f2829…

MALICIOUS

PDF

78.8 KB Created: 2021-03-29 07:29:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 75c52b4076f7288c221e6d5e4c7ae12e SHA-1: 174b958e8b2f2f514e3a6c8bd6a3b62f7aff72e5 SHA-256: 132e76f6fe5f28292846e1bbcb51ce5d4080909839c9cd165f0c99aa6f9647f0
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://lozipotod.ru/wix?keyword=error+implicit+declaration+of+function PDF link annotation
    • http://lnstagramsupportlives.com/melizolixorepelutofiy95zo.pdfIn PDF document text
    • http://piliwowomerisu.iblogger.org/kindle_3_software_upgrade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_602b7e5665175.pdfIn PDF document text
    • https://cdn.sqhk.co/jowoluguwoge/ghlheBI/synesthesia_examples_psychology.pdfIn PDF document text
    • https://cdn.sqhk.co/basunemavut/hhhheSf/assinatura_certificado_digital_em.pdfIn PDF document text
    • http://megatorg.ru/28371527021gubpf.pdfIn PDF document text
    • http://alexandreablog.com/sniper_elite_4_cheats_ps4rjivk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_6020afb17901e.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/HeRIhgG/nejixoxubekogixi.pdfIn PDF document text
    • http://differencecheats.net/jopidefepimajejabh0qw7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_601145cc66b72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_605052e8c15bd.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/hfR3jba/.pdfIn PDF document text
    • http://lovefoxesi.iblogger.org/bossanova_jawa_layang_kangen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366041/normal_5fe59d504b646.pdfIn PDF document text
    • http://magicwoolshop.com/openra_dune_2000f8you.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gizamir.epizy.com/69996382293.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_e2767c96e4364d9c85b45962294fc98b.pdf?index=trueIn PDF document text
    • https://cd9ed9ec-87d1-42be-9198-0b2de6c1db4d.filesusr.com/ugd/158fb9_01344df4af804f599ac9bdd03ab519b5.pdf?index=trueIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_7a503e614eca44fdb37c61fbeae05ee9.pdf?index=trueIn 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_off0000efac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAC 5080 bytes
SHA-256: 46ed18a1125952192d0229cfe42c077475228f0508d5261338b6d01b888752cf
font_01_sfnt_off000100e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E0 13720 bytes
SHA-256: 006a4ad0ad8659612464f480e71a9140e87806fc9e58c1d84caddefa76de33bf

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