Malicious PDF — malware analysis report

Static analysis result for SHA-256 68abc32a5d88dc62…

MALICIOUS

PDF

75.1 KB Created: 2021-03-09 05:58:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d3a52f0b2673f00a474055b1144c1fee SHA-1: af663fb00d399987c80dacb3a210ed5f960a5ee8 SHA-256: 68abc32a5d88dc62095585a16cf7dac9ffe203618b88240adf57481af7902717
186 Risk Score

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 0.9998

Heuristics 6

  • 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.
  • 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://gimoguvi.ru/strik?utm_term=robin+hood+men+in+tights+quotes PDF link annotation
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/8240160.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/jbQieig/mebupatobisodo.pdfIn PDF document text
    • https://bagamijak.weebly.com/uploads/1/3/1/3/131380043/xofigomofitider.pdfIn PDF document text
    • https://cdn.sqhk.co/kixikeli/IhgicGn/dragons_rise_of_berk_pc.pdfIn PDF document text
    • https://bitojobuf.weebly.com/uploads/1/3/4/8/134892495/e612d67f.pdfIn PDF document text
    • http://gelokan.sportsontheweb.net/bosudejuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/eijjghQ/cafe_racer_motorcycle_boots_uk.pdfIn PDF document text
    • https://jubipolofolexi.weebly.com/uploads/1/3/2/3/132302872/xezixaxidupudiveri.pdfIn PDF document text
    • https://newakikijako.weebly.com/uploads/1/3/4/3/134351088/3736405.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/jbiahf6/bevud.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/X6SghP0/91387921921.pdfIn PDF document text
    • https://kesesitevon.weebly.com/uploads/1/3/5/3/135317357/wozamurob-xisavobor-ziwomewujoputu-rupakaleni.pdfIn PDF document text
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/5182973.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/4101803009.pdfIn PDF document text
    • http://nenodipemuxok.mypressonline.com/38535258291.pdfIn PDF document text
    • http://sunazeremitiwu.mypressonline.com/gimpy_leg_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/ahfjhjy/asylum_escape_room_chapter_3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rixuroruwe.myartsonline.com/robot_coupe_r2_food_processor.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 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_off0000e903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE903 5172 bytes
SHA-256: f8a71d102ae62c256dda03e9109d7c179f130550e27cd58557a205bc5fc69dce
font_01_sfnt_off0000fa6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6D 10836 bytes
SHA-256: 2ab01ecd3e2b3e4ff0fb4173d36b904bfff5098ce1fab44d41f5de5a04da8798

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