Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d3aa53e76b2dd1…

MALICIOUS

PDF

96.2 KB Created: 2020-12-30 01:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e18986f8a9dddbe00c562aa49f8396e1 SHA-1: bf58129e6fdf305f1eb9883ed9c822cbc6d1d5e7 SHA-256: 29d3aa53e76b2dd1219c603b1a683817d6ed2c5b30925c01d61478429c295d98
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=online+moto+racing+games+3d PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5f916fee01306.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/besiseku.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/3cd184a9944e1d.pdfIn PDF document text
    • https://xagixuruzetel.weebly.com/uploads/1/3/4/3/134319769/f5b21ee5.pdfIn PDF document text
    • https://cdn.sqhk.co/godajaxox/jdiaDhh/mobizen_screen_recorder_app_download_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448096/normal_5fd0ac7a3fb6f.pdfIn PDF document text
    • https://nevajuto.weebly.com/uploads/1/3/2/6/132695651/buxugezigegixose.pdfIn PDF document text
    • https://cdn.sqhk.co/xetorexevapi/17iTifL/slime_wallpaper_for_mobile_phone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_5fc760f2bc402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fe8038addd57.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/36904835970.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/green_mountain_district_music_festival_v.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/aql_sampling_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/86587684809.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/surofawumaxedinoni.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

Related samples 6

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_off00013c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C30 5448 bytes
SHA-256: ea1455c6a9b23a97c638fa38103db39d18a7fcc5cd9ae67cfbd6e046f511fd25
font_01_sfnt_off00014e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E94 11028 bytes
SHA-256: 05ccc8936fc7c07f11ea3b11ec195b18f7d085605647f858a0d7d69b1230780c

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