Malicious PDF — malware analysis report

Static analysis result for SHA-256 6425b16e22cd21fe…

MALICIOUS

PDF

64.4 KB Created: 2021-02-07 01:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 09ee51963f86143c112749e2f31875f0 SHA-1: c3d6fae67ddb044b570652a73ff7d53431a2eacc SHA-256: 6425b16e22cd21fe65a78809a6f37e4d1822dd2356a3446f64b9458118dea845
186 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 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://druttle.ru/wb?keyword=aol%20mail%20settings%20for%20android PDF link annotation
    • https://tewizoduwab.weebly.com/uploads/1/3/5/3/135341898/zanarelibejo.pdfIn PDF document text
    • http://7lessons.space/rocket_launcher_gun_for_diwalicq4vp.pdfIn PDF document text
    • https://vafobuzegigotot.weebly.com/uploads/1/3/0/7/130775214/2f4e9a7fd82.pdfIn PDF document text
    • https://dopitusorotid.weebly.com/uploads/1/3/0/7/130738794/kajajo-rapowadiwozuku-kavomizege-kadawegeju.pdfIn PDF document text
    • http://mxsale.info/379116344539mhk0.pdfIn PDF document text
    • http://bettermoneytips.com/gmat_examg9x6u.pdfIn PDF document text
    • https://matigolexa.weebly.com/uploads/1/3/2/6/132682665/razawegorojofag.pdfIn PDF document text
    • http://gozatelaji.22web.org/40136697107.pdfIn PDF document text
    • https://rowopubogapog.weebly.com/uploads/1/3/4/2/134234702/9228791.pdfIn PDF document text
    • https://romiwewigases.weebly.com/uploads/1/3/2/6/132682929/9720033.pdfIn PDF document text
    • http://mandarins.space/3585239332530vwl.pdfIn PDF document text
    • http://lubuwemobiso.iblogger.org/lorexitobavuwevom.pdfIn PDF document text
    • http://reduslimer.website/nuxurtkc30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vidabovon.epizy.com/81702390290.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/bunsenlabs_32_bit.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_off0000bf07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF07 5216 bytes
SHA-256: 7a35697d4cd428da5b31c5f9b8f82fc592334b5c1d02ac2ddf950dbcd5490b1c
font_01_sfnt_off0000d0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AC 10440 bytes
SHA-256: 34b002911f1356b0fffbc51acd3bf84ed9ecda04ad25b0266d0f1a8771573f2b