Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c2bd7e53e47bd6…

MALICIOUS

PDF

73.5 KB Created: 2021-05-09 00:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7ec0a2ea67d83ec009a6e303f69ac527 SHA-1: e75537d7d4aa6385fd1899612039897e81222540 SHA-256: 68c2bd7e53e47bd664077526785251545063ebe435223d153292e993e97c990a
186 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. 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 0.9999

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/strik?utm_term=what+is+fuzzy+logic+in+a+rice+cooker PDF link annotation
    • https://cdn.sqhk.co/dapalufited/lOu48Vd/83367432221.pdfIn PDF document text
    • http://bigtittybella.com/detox_meal_plan_3_dayiwsq8.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/8770db3.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/2a574e2a6303.pdfIn PDF document text
    • https://muputobiga.weebly.com/uploads/1/3/5/3/135308906/bimoteponuk.pdfIn PDF document text
    • http://fastpeysistem.online/mow_zombies_mod_apk_moddroidfwpa3.pdfIn PDF document text
    • https://fitarerak.weebly.com/uploads/1/3/5/3/135313257/volejas.pdfIn PDF document text
    • http://chategratis.online/newton_s_laws_of_motion_worksheetgh9vk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_606b3235de2b8.pdfIn PDF document text
    • https://cdn.sqhk.co/rixutixim/jdgichc/fidemorukugitimunotesokew.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxawexa/ahbjjhc/financial_times_logo_png.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/aQeUifD/pegawokafamuzemixon.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/bbxXgdy/10568866474.pdfIn PDF document text
    • https://cdn.sqhk.co/punipopi/iiuCVid/master_crafting_and_building_apk.pdfIn PDF document text
    • https://zuwubusonelab.weebly.com/uploads/1/3/0/7/130739898/fadiribixiboxaxer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386613/normal_5fcc077c3fa94.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/visagogijulep/robert_boylestad_electronica_teoria_de_circuitos.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/69963426122.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_off0000e2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F9 5372 bytes
SHA-256: e54c79fc488ffd9f7c8b43ec634a93681bca7af358dd57d2f3dfdfa7069fe566
font_01_sfnt_off0000f560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF560 10484 bytes
SHA-256: 4d626317d78ee817f8655e29238254d5c021d9d159b23ae7864cf21a4914e8c0

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