Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc37442746f32de2…

MALICIOUS

PDF

76.8 KB Created: 2021-01-26 23:49:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fecbafb9dd5e91b09c3089cce886f3b5 SHA-1: 5dcb8e901da3a67ac891b50c5e1ecaf6e2f29524 SHA-256: bc37442746f32de261136d0871168e501823067c41e2bd373522c3169296a8f0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=mi%20musical%20note PDF link annotation
    • https://togimapobeno.weebly.com/uploads/1/3/4/6/134649298/xoduxolugudewa-bopake-tonegag-jugafabokatot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405413/normal_5feb4232da922.pdfIn PDF document text
    • https://lefelovavuj.weebly.com/uploads/1/3/4/6/134644752/671038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383925/normal_5fd610c58ee83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_5fd2663c8bc0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449629/normal_5ff8316c239b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470828/normal_600b8c815b3a9.pdfIn PDF document text
    • https://jonenatone.weebly.com/uploads/1/3/1/8/131872225/757e4d3caa.pdfIn PDF document text
    • https://pofimutazotoxo.weebly.com/uploads/1/3/4/0/134000188/242036.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/9067225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mirepili.epizy.com/47805896867.pdfIn PDF document text
    • http://pekagotikoweguf.epizy.com/72299541620.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/obstructive_sleep_apnoea_rch_guidelines.pdfIn PDF document text
    • http://puwepubofixa.epizy.com/24771164265.pdfIn PDF document text
    • http://lojifasipok.rf.gd/7164091169.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/barcode_reader_sample_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/20523060124.pdfIn PDF document text
    • http://bejiteviv.epizy.com/blockman_go_uptodown.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_off0000ee17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 4852 bytes
SHA-256: 5c67fc5f3fc3959c22f21f6bf74525660b927f0c9bc8f8db4fc70421f3d97056
font_01_sfnt_off0000fe91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE91 11820 bytes
SHA-256: e4a13638b54b1732fd74c94d8775ecea60655393e2cc118c2f8ebbb57fd444d7