Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f19b43b6cc9e20…

MALICIOUS

PDF

69.7 KB Created: 2021-02-18 23:28:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5af538a0c0bb7324dbdcaa2519297055 SHA-1: ccd187175d61a29b883c498f4582211e7aba61b0 SHA-256: a6f19b43b6cc9e2066c6530d83687d5615c4b0ea614427a1a8fa466740727e02
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=how+to+create+an+unsubscribe+link+in+gmail In PDF document text
    • http://labiosdewonda.com/broken_but_beautiful_songshmtmn.pdfIn PDF document text
    • http://zaximudetebase.iblogger.org/201569239.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385012/normal_5fef18409422d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443356/normal_6007b706c6b27.pdfIn PDF document text
    • http://probkin34.xyz/anger_of_stick_5_hack_appvn5ug7v.pdfIn PDF document text
    • http://barbanapoli.moscow/78405902650qflkm.pdfIn PDF document text
    • http://nicepics.xyz/bekikuwebulazevarikgmrh7.pdfIn PDF document text
    • http://putifid.iblogger.org/bimal_jalan_committee_report_summary.pdfIn PDF document text
    • http://qrastenmap.online/59773276603lgml5.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/cugehaV/vintage_snake_eyes_game.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatapegil/mAiigds/xiwajalozefijemipifeke.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/ibAd8Y3/reweduxupefuwivakaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fopadunopim.epizy.com/zinozuxagedikaferozinaran.pdfIn PDF document text
    • http://xujalebarot.epizy.com/86936371916.pdfIn PDF document text
    • http://mitotubuxabax.epizy.com/skripsi_akuntansi_keuangan_daerah.pdfIn PDF document text
    • http://mavipob.epizy.com/pathophysiology_of_hypertensive_retinopathy.pdfIn PDF document text
    • http://baxamudixilado.rf.gd/dilagufemotebaporez.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_off0000d54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54D 5376 bytes
SHA-256: bffd1d48da950fec70e50afb13dc148e18aa603fba45f6032714483d60bf0098
font_01_sfnt_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 10044 bytes
SHA-256: 3be44a3b2aac40587aca9670fe3d6f8f314941c10df87055289b2fb6abc0a17e