Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc510e0c3bdb295f…

MALICIOUS

PDF

71.9 KB Created: 2021-01-24 09:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e9f6f25b75381b3bcc578f3a2ac6e653 SHA-1: e47ed03f3bf08eb33fe0a0e31b426e0591b64d72 SHA-256: bc510e0c3bdb295fcc101998137617b129ef32cd4f8a9e37bdc220fa3c94b697
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://trafffi.ru/wb?keyword=best%20rechargeable%20battery%20for%20canon%20digital%20camera PDF link annotation
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/87fa0defb4d.pdfIn PDF document text
    • https://temisufe.weebly.com/uploads/1/3/5/3/135384001/3612402.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/bagumivofek-lusela-merol.pdfIn PDF document text
    • https://site-1175508.mozfiles.com/files/1175508/weruxarefubewonikazogoj.pdfIn PDF document text
    • https://gakewejodum.weebly.com/uploads/1/3/4/9/134902465/niworak.pdfIn PDF document text
    • https://site-1175781.mozfiles.com/files/1175781/toy_carnival_tic_tac_toy.pdfIn PDF document text
    • https://xubidanata.weebly.com/uploads/1/3/4/8/134895671/1033949.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/wggaccj/zalizose.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/031f4948389c9.pdfIn PDF document text
    • https://vawuwoteb.weebly.com/uploads/1/3/0/9/130969488/ed218c4754.pdfIn PDF document text
    • https://site-1177462.mozfiles.com/files/1177462/22557132892.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/paxivogedewilu/worksheet_metric_prefixes_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/daru_badnaam_remix_song_mr_jatt.pdfIn PDF document text
    • http://vetuvadoxawiton.epizy.com/aston_martin_v8_vantage_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/pagel.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_off0000dd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD00 5728 bytes
SHA-256: f0eb04363687d87a6463633f2cfb17fb2c5d6bb2fa311466a73f9891f6da0944
font_01_sfnt_off0000f05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05F 10048 bytes
SHA-256: 594ddfeacec6da4b512ea46c54d5c5b212534d9120e1a801b5d696fc595f823c