Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a95c791d0436466…

MALICIOUS

PDF

78.6 KB Created: 2021-03-30 22:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fffded522870f4737a274cb80609f8cd SHA-1: 94bebc18071a0880b6ba816eb9ad9de8cdadb7ba SHA-256: 1a95c791d0436466b7bb4daf14f73265c92a8b99c5e339b5f874890f6e59d5f5
126 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a lure to external malicious content, likely involving JavaScript execution within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://jottigo.ru/strik?utm_term=what+is+technical+drawing PDF link annotation
    • https://cdn.sqhk.co/jirozixo/FjeOpid/zixugurezufovo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383579/normal_604d343b40d0b.pdfIn PDF document text
    • https://vafomelopujoxo.weebly.com/uploads/1/3/4/8/134864043/09441c0b9.pdfIn PDF document text
    • https://kawavaturitavo.weebly.com/uploads/1/3/5/3/135321378/38b974006ac36.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzagile/ngdeFie/95839122526.pdfIn PDF document text
    • http://nuzabokazovuwa.iblogger.org/apostille_texas_form_2101.pdfIn PDF document text
    • http://xigosilefonaboj.iblogger.org/tuwebapewo.pdfIn PDF document text
    • https://cdn.sqhk.co/forinabam/hbjhgCl/34128394589.pdfIn PDF document text
    • https://fujepibipaxider.weebly.com/uploads/1/3/1/0/131070521/8367665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_603a4e78de5cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454163/normal_5fcf8da0c74b2.pdfIn PDF document text
    • https://durunefa.weebly.com/uploads/1/3/4/7/134712847/8034159.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/blgNbje/black_friday_2020_laptop_deals_dell.pdfIn PDF document text
    • https://sujumakatu.weebly.com/uploads/1/3/1/3/131379709/fc34d1c70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5ff05c3005dd1.pdfIn PDF document text
    • http://pufuwobexoz.iblogger.org/instagram_video_templates_free.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/bisiku/visiwaxomofuxofisat.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/mejuwiluwelawi.pdfIn PDF document text
    • http://ralepixevoz.epizy.com/lease_termination_agreement.pdfIn PDF document text
    • http://kuwademepekipil.epizy.com/17033396017.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/loxekefu.pdfIn PDF document text
    • http://muxobuduxude.epizy.com/english_to_spanish_basic_words.pdfIn PDF document text
    • http://jarunotaso.rf.gd/material_requirement_planning_process.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/august_alsina_song_cry_music.pdfIn PDF document text
    • http://lufivav.epizy.com/75366637139.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/what_toner_does_the_hp_laserjet_pro_400_use.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_off0000f4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D0 5304 bytes
SHA-256: a1e81988d5c3be1538ef124b3a34e7a632ea77ca3a971e0ee776b0dee29bbd9c
font_01_sfnt_off000106ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EC 10656 bytes
SHA-256: 45c4981ef8a2d351f0bb8693d2cd3081e1a5b8d433fdcdf5e08c4a677c9f2ce8

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