Malicious PDF — malware analysis report

Static analysis result for SHA-256 777bcb2ebf44be98…

MALICIOUS

PDF

80.7 KB Created: 2021-03-04 03:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ed68881d04e454302c1ac2a0214ab1a4 SHA-1: 54129bf245c87b4850c3b3bdb6984fce04abbeb0 SHA-256: 777bcb2ebf44be9817addc5712f2f6cf498d1fe3c1d2e174635f5ae266c4e14f
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, suggests a lure related to search terms like 'Paintball store near me'. ClamAV and ML classifiers strongly indicate maliciousness, likely for phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/strik?utm_term=paintball+store+near+me PDF link annotation
    • http://jofufunobek.sportsontheweb.net/31553488872.pdfIn PDF document text
    • http://nekretnine.site/ford_mustang_gt_2014_hpthqy7.pdfIn PDF document text
    • https://cdn.sqhk.co/wugotiparo/hYibjau/85563735364.pdfIn PDF document text
    • http://instapresent.site/alkanes_isomers_worksheetqmevv.pdfIn PDF document text
    • http://begdas.fun/teori_utilitarianisme_jeremy_bentham571a2.pdfIn PDF document text
    • http://save50it.info/why_doesnt_my_gas_stove_stay_lits3yl4.pdfIn PDF document text
    • http://vufajed.getenjoyment.net/jugusuginipabaxokorobep.pdfIn PDF document text
    • http://mokemowowove.mygamesonline.org/what_lights_on_dashboard_mean.pdfIn PDF document text
    • https://cdn.sqhk.co/lukisebeka/AISRhgd/technically_viruses_are_not_alive.pdfIn PDF document text
    • http://inmyshtangen.xyz/rexam46jc8.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/educational_research_quantitative_qualitative_and_mixed_approaches_7th_edition.pdfIn PDF document text
    • http://optamorem.com/ninowosiserwabcq.pdfIn PDF document text
    • http://albl.ru/tamilrockers_telugu_full_movie_2018yvnx3.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/jXgRFia/fowasowakisijawufafa.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/jj6lLng/ding_tea_hours_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/ggjjbhd/23727800145.pdfIn PDF document text
    • http://fb-ig-copyright.com/gamanefukodikn82oi.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/ponivotigegepub/47850271396.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/rugged_android_tablet_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/ropixuguxu.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/rawevozadoke.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/kgb_archiver_free_for_windows_10.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_off0000fe41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE41 4972 bytes
SHA-256: 76a5ff4b479831e4eec0bf7cc73107f7186a6e1e39c21d777b103dd2d9c571ac
font_01_sfnt_off00010f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0D 11368 bytes
SHA-256: d2d5cadb0fffd8c6ce964759737ef47ca8784b8998f8ee4d8cc4ee92687f2886

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