Malicious PDF — malware analysis report

Static analysis result for SHA-256 f897d1c7545d0301…

MALICIOUS

PDF

72.9 KB Created: 2021-02-10 11:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2fe38964300c3c3e355743cdde80d8b1 SHA-1: 8e9a8306a5d255e34e6a9d1aed5ef314d91704ee SHA-256: f897d1c7545d03016d1a3808daab750e3f231bc079f0f23cdf90c3f37cc1615e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wb?keyword=my%20little%20amnesia%20game PDF link annotation
    • https://cdn.sqhk.co/tigufarejeti/RU7kfnQ/57877625491.pdfIn PDF document text
    • https://nabokopawupanav.weebly.com/uploads/1/3/0/7/130739772/pebidaj-pabikubew-nipozoji.pdfIn PDF document text
    • https://vajefusuvujob.weebly.com/uploads/1/3/4/4/134464162/vetezigopinolubuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/zirizowesaw/ih4hjd7/narukutakexunasebi.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/ghifslg/46703864488.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/egiigpS/rolling_stones_gimme_shelter_video.pdfIn PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/5228752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_6011ab8c5150c.pdfIn PDF document text
    • https://zuzesewijolane.weebly.com/uploads/1/3/1/4/131406438/a8c4a485b0414b.pdfIn PDF document text
    • https://cdn.sqhk.co/papebikuwi/fwgchYY/12682711367.pdfIn PDF document text
    • https://fopabitibomasad.weebly.com/uploads/1/3/1/8/131857723/miferavunupani.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/dJieDgg/virus_plague_pandemic_madness_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/aghR7he/18101581450.pdfIn PDF document text
    • https://zawurufaxi.weebly.com/uploads/1/3/4/8/134861846/bafiw-kogadipuz-fexuzuxagile-xomivadaxixe.pdfIn PDF document text
    • https://losuwigawoje.weebly.com/uploads/1/3/5/3/135304717/pezemoxoki-zojoxoke-tuturuget.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AE 5016 bytes
SHA-256: 24757ea156cacdd1dab49a026bb157e30850ed67c9dee000580a4a315d975158
font_01_sfnt_off0000f3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C7 10476 bytes
SHA-256: ab9be2dfa920dc61b19f9ec153534b16044f8ed8f4dd53ca6402e13aa51c3009