Malicious PDF — malware analysis report

Static analysis result for SHA-256 c58647ec5ab012d7…

MALICIOUS

PDF

74.5 KB Created: 2021-02-21 19:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8aaf8ea31cc1b4147c4a849049705ab4 SHA-1: f7ed3a549d68b7d6565a7372436e6d85dbb3800c SHA-256: c58647ec5ab012d7e8fed1bae1343e6208a0c75f60184655ec6498803ca4034f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of this document being used for phishing or malware distribution by redirecting users to external sites. The presence of external URIs and the overall structure suggest an attempt to exploit users searching for product information.

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://seumenha.ru/strik?utm_term=moto+x+2nd+gen+price+features PDF link annotation
    • https://cdn.sqhk.co/kupawusel/iDgjgf2/fantasy_playoff_tie_breaker.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/3jadjhh/microban_24_disinfectant_spray_review.pdfIn PDF document text
    • https://cdn.sqhk.co/posukomokufi/rqhjih3/raft_simulator_apk_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5fcb6389a469d.pdfIn PDF document text
    • http://gakivako.iblogger.org/83510069640.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/haAv4hb/virtual_friendsgiving_for_work.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/ibhglhg/dr_driving_game_free_download_for_pc_softonic.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488141/normal_5fe1b3a18cb79.pdfIn PDF document text
    • https://cdn.sqhk.co/pajelidul/1KVmqii/rugby_world_cup_2015_highlights.pdfIn PDF document text
    • http://jesopejasunu.22web.org/equivalent_fractions_1_2_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/hchhvha/79344241112.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/gjghmm5/sim_sara_is_missing_walkthrough.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tufukupetateto.epizy.com/jofeselepoja.pdfIn PDF document text
    • http://wuwedutukuw.epizy.com/braehead_primary_school_ayr_uniform.pdfIn PDF document text
    • http://fadifisevak.epizy.com/used_stihl_ms_170_chainsaw_for_sale.pdfIn PDF document text
    • http://reditab.epizy.com/gefujomovesitesorid.pdfIn PDF document text
    • http://nuzuxuzenexeku.rf.gd/1736860321.pdfIn PDF document text
    • http://xanunomoz.rf.gd/gakikoromilobebajuzosamel.pdfIn PDF document text
    • http://metorudadoz.rf.gd/american_standard_hvac_installation_manual.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_off0000e2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E6 5496 bytes
SHA-256: 379258f290bbbe6c54f711f33b26e56645d0c10d17b1233f6cec45ac8086cb9a
font_01_sfnt_off0000f5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C7 11640 bytes
SHA-256: 4419486c712c16978be38888ef7719fbb15665ce78c6a903b697375ade8f691e

Open this report in the interactive analyzer, or submit your own file for analysis.