Malicious PDF — malware analysis report

Static analysis result for SHA-256 460777f88888a9d3…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 06:32:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 09b47ba6b7dc75d6667f6f6231c25e52 SHA-1: c76657573e6aad21f264a11a44bae6e9f698391b SHA-256: 460777f88888a9d36b26ce8c10d46310f47b71006576432c32788f6bb39fee77
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/award?keyword=how+do+i+record+accounts+receivable+factoring PDF link annotation
    • https://litepuvib.weebly.com/uploads/1/3/4/7/134741427/c8527a78d3de04.pdfIn PDF document text
    • https://cdn.sqhk.co/vofudejobif/11gijhe/doviwetogizomag.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/628487.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/ghijjgw/file_manager_for_iphone.pdfIn PDF document text
    • http://bigomipami.22web.org/11737613998.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/idBJnhe/fantasy_premier_league_gameweek_17_captain_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493282/normal_6019ca594041e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389823/normal_60067f72121b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490367/normal_5fda39fdea07c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407571/normal_600775f400db3.pdfIn PDF document text
    • https://jesuzexujugom.weebly.com/uploads/1/3/0/7/130776612/dowipileguzeremavuxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dixadenidufudu.epizy.com/beelzebub_s_tales.pdfIn PDF document text
    • http://zonatenitisa.rf.gd/dykes_to_watch_out_for_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/how_to_prepare_mcq_in_google_form.pdfIn PDF document text
    • http://tifobegujetesa.rf.gd/one_less_bell_to_answer_wiki.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_off0000e4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EC 5440 bytes
SHA-256: ed677d0942958691e86ee99ba045dffdde03c6a83430feb34494922f3f72fcce
font_01_sfnt_off0000f791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF791 10688 bytes
SHA-256: 0c53d5749d08b9855a66790778cc406b9866d3c0b7c51d115d5bf7c126d7fd79