Malicious PDF — malware analysis report

Static analysis result for SHA-256 a493629b5afaccf7…

MALICIOUS

PDF

65.3 KB Created: 2021-02-26 14:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8dc9447ab934d3e88bd74fdf58b07c81 SHA-1: 72273c1e2d255b95dc1da90cbe1a8e04fdba7413 SHA-256: a493629b5afaccf796a488bbacef92c1d0649576d9c4d87d3a262af323101101
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://dugedepap.ru/123?utm_term=kenmore+portable+ac+drain+hose PDF link annotation
    • https://bagerinev.weebly.com/uploads/1/3/1/6/131636948/tomukovepavilu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_60243698d93b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420459/normal_5fecef1853d33.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvuderasaza/bif2Ujj/human_resource_management_job_specification.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/giljhhe/vorowekazivexezimuzom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491723/normal_5fde2e0b2e014.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/WhaVIkW/32072862898.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386335/normal_5fff17e2ccc15.pdfIn PDF document text
    • https://susatabunek.weebly.com/uploads/1/3/2/6/132695662/9021836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_6013be770efe3.pdfIn PDF document text
    • http://gtomishebs.xyz/33324708462uvkqt.pdfIn PDF document text
    • https://sivikowililip.weebly.com/uploads/1/3/4/5/134599649/9197948.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/tawovojo/vodobapisadurodiz.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/orange_movie_naa_audio_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/addict_with_a_pen_sheet_music_piano.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_off0000c232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC232 5424 bytes
SHA-256: f71ae360107bb301b8dc290386ff381e7dc7074507ff66eeb6a4c3fa11a49380
font_01_sfnt_off0000d468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD468 10152 bytes
SHA-256: 433a9717ca1305efd2fc07b4a14211543514ffb168150ba679046fbf64bf8722