Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0fd28a530337e6…

MALICIOUS

PDF

85.9 KB Created: 2021-02-27 07:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fe602f744885b556b2a1ac56c864bfdb SHA-1: 62a79bf0e8c6cb46e61b987103869a13e992419a SHA-256: 2d0fd28a530337e67c6b7c2453426c872e7fef6185c667340c00c4fb6e18c2fd
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing trojan. The PDF contains a large number of external links, many pointing to other PDFs, suggesting a link farm or phishing campaign. The embedded content, though heavily obfuscated, indicates the file's purpose is to redirect users to malicious external sites.

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 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.
  • 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://xajibur.ru/strik?utm_term=what+is+the+difference+between+a+lexus+ls+460+and+ls460l PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379491/normal_5fe59b31a9bec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447271/normal_6000c82ca5ea0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384035/normal_60300d5246e46.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/igUYjhl/fernanfloo_geometry_dash_1.pdfIn PDF document text
    • https://rorobobadewa.weebly.com/uploads/1/3/1/1/131164171/2521743.pdfIn PDF document text
    • http://vorecan.fun/craftsman_weedwacker_17_25cc_manual95d7j.pdfIn PDF document text
    • https://cdn.sqhk.co/sadudolamom/tCilgeq/king_rivals_premium_mod_apk_1._0._4.pdfIn PDF document text
    • https://wunepilupizuxo.weebly.com/uploads/1/3/1/8/131857535/dutegutiguf.pdfIn PDF document text
    • http://xplaintome.ru/58495486304rc4i1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5fcbffbc36aa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481999/normal_5fe62a2184e19.pdfIn PDF document text
    • https://cdn.sqhk.co/jomenuluz/bEhjjhW/cut_the_rope_games_in_order.pdfIn PDF document text
    • https://zogozunenu.weebly.com/uploads/1/3/5/3/135399222/2b464c0.pdfIn PDF document text
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/ragosa_wubuwiwutud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494875/normal_5fee65d68daaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416938/normal_5fd6a0cf1cd0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464302/normal_5ffa52fae8309.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001123a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123A 5808 bytes
SHA-256: 089c953a58d3b23739a79471916c14cffd542a9f06d5d2af1126ab7e75cd6049
font_01_sfnt_off0001261a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261A 10748 bytes
SHA-256: 7761765eecf332270874aacc3f75df34a58a678fca8952ed890d55bbc7525b5b

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