Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a89f9fc229a688…

MALICIOUS

PDF

71.1 KB Created: 2020-11-23 17:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 11ef3a5665bd8504f0741f1c6bc34df2 SHA-1: 0da4a583de1d10ab41dba1475a2d876197c6b429 SHA-256: 72a89f9fc229a6882851f8249f96d4cf7ba0e3c6600f56876ecf7c1020723449
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://trafftec.ru/wb?keyword=silent%20movie%20sheet%20music%20free PDF link annotation
    • https://nefenupenarus.weebly.com/uploads/1/3/4/4/134476068/bibavab_koroxeduwed_jusiku_videgorizarabem.pdfIn PDF document text
    • https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/zarik.pdfIn PDF document text
    • https://ruwitopiramowu.weebly.com/uploads/1/3/4/3/134364975/dagagawegufod_dojoxedebom_galabetakuwil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_5f8f2a8bd018e.pdfIn PDF document text
    • https://rawunixu.weebly.com/uploads/1/3/4/5/134527334/2126557.pdfIn PDF document text
    • https://xafineker.weebly.com/uploads/1/3/4/7/134701786/f7cf7.pdfIn PDF document text
    • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/xifano_bujufekarigugud_wosep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d2f538-7c48-4ea6-9c61-7928c68b9cd3/gigabyte_ga-_z270p-_d3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6345fe39-447d-49d2-b66c-d968dca8a3d3/market_wizards_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cd6fe6-90a6-49b8-9a94-2e0f408e2c8b/saforalatovajefimapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a7521d-9df3-4fbd-9cd9-e5fa1dbaf2f2/tanizufuwewuwepata.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/steam_boiler_technology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88d03929-b847-42c5-9bb0-6553613e2d76/jazudasobogiv.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/53959418227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db5c401b-2f05-4f77-871e-36b34038c77f/zafutixojef.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_off0000db13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB13 5076 bytes
SHA-256: 2a06b956a381bd8845ac8ee882358b6c0f4f5cc558579c3506b242608b53a4d2
font_01_sfnt_off0000ec37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC37 10404 bytes
SHA-256: ade00020b815881b3060adfe6a9a7246fdde0f926228fb15919f2a4680786cd3