Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1db47ad39202794…

MALICIOUS

PDF

69.6 KB Created: 2021-02-04 18:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5381d68f99156faf7e449bd7eb86049b SHA-1: 9858667d4073d7f5ca92275877f3fbe1040865db SHA-256: b1db47ad392027940475ac52782c87a4c6d8f37a7eff8bb3d8498795ef72d30e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://baarspo.ru/wb?keyword=insects%20worksheet%201 PDF link annotation
    • http://callipakk2.site/livestock_business_plannea85.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/qciflgi/nowonijowu.pdfIn PDF document text
    • https://cdn.sqhk.co/tezabulaw/gghgYdz/movotozimaz.pdfIn PDF document text
    • https://cdn.sqhk.co/mutexeze/eieiahi/zombie_castaways_toys_island_map.pdfIn PDF document text
    • http://sportplays.ru/natadufurojaseviiixrq.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/dugoja8dms6.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/ejexwDJ/nails_for_you.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/2ce7b56.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/bowewig87f.pdfIn PDF document text
    • https://gizizajavime.weebly.com/uploads/1/3/2/6/132695742/c435223b94b.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/7hgifjg/girosivuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://joriboka.epizy.com/samsung_bypass_apk_free.pdfIn PDF document text
    • http://fanixagef.rf.gd/jasmine_test_coverage_report.pdfIn PDF document text
    • http://siwojanapav.epizy.com/faladilalutinoja.pdfIn PDF document text
    • http://vonodese.epizy.com/56393325753.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_off0000d6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B5 4788 bytes
SHA-256: ca133054835c0464c3e57c588d424d6bebcac73ca1a493c9719f034e4a14705a
font_01_sfnt_off0000e712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE712 10284 bytes
SHA-256: 14c36c2ffa5ed030f1ae1c851c6b0528ba22f6fc06c3142875850614e9cd478d