Malicious PDF — malware analysis report

Static analysis result for SHA-256 60591d097050bc41…

MALICIOUS

PDF

78.0 KB Created: 2021-03-20 08:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b6a1664ada31d23223bdf2511bbd0c23 SHA-1: b145a02b2a53531e21af7d540a261ce802c10ae6 SHA-256: 60591d097050bc414b485cfde031b848ac262267a7f6d86762e4506af144c3ac
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/strik?utm_term=movie+script+example+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472200/normal_60087d6936159.pdfIn PDF document text
    • http://pearhaidhr.fun/multiplication_chart_printable_freeof2c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408471/normal_603eacca4ae96.pdfIn PDF document text
    • http://lnstagram-helping.live/why_is_kingkiller_chronicle_so_popularotr3x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417531/normal_6022bb75a94ca.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/cloistered_cleric_pathfinder_2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385038/normal_5fcf5c63ee9d1.pdfIn PDF document text
    • http://bestsalestoday.xyz/estandar_ieee_802.7mmm1l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489054/normal_6040a1256ca54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447630/normal_6022142284a79.pdfIn PDF document text
    • http://fesufobototezer.mywebcommunity.org/apoptosis_unam.pdfIn PDF document text
    • http://tuvosudokalidu.scienceontheweb.net/adda247_current_affairs_june_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379369/normal_5fede9259258f.pdfIn PDF document text
    • http://drilltech.info/98082008503rfmhy.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/a7857dc9-9f90-4ba6-bdad-deea4d541c5f/tokovimubuzaweju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bc24d08-ae55-496c-a76f-f20c785ef6e9/how_to_download_a_music_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5289b607-7b7e-479d-876c-570a4ee76492/how_do_i_steam_clean_my_ge_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8144e596-2823-4830-99a3-3aa5649b001e/cuales_son_los_tipos_de_funcionarios_publicos_en_venezuela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13161222-335d-4d6c-97cb-e61aae4761ff/69355245429.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_off0000f477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF477 5432 bytes
SHA-256: 7c197706f6317cda6225a59359ff85aa098da559bc2d2c5bdfe9fded2927e68a
font_01_sfnt_off000106f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F3 10588 bytes
SHA-256: 8f7065bdb3f249e774de4546083e47cd944604aefeb0e20bae80b85de367651c

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