Malicious PDF — malware analysis report

Static analysis result for SHA-256 361e5a29d5cc8541…

MALICIOUS

PDF

78.7 KB Created: 2021-02-25 05:58:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e98bb6b4056666fdd176234b8882bdcd SHA-1: cc5b7c2fe49aecdf1a93d412640dc5d894127f24 SHA-256: 361e5a29d5cc85413dc208a7f02618278d0ab3ea6087e5c2bd1103c5654bd341
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 0.9998

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://baarspo.ru/strik?utm_term=is+sandisk+secure+access+necessary PDF link annotation
    • https://cdn.sqhk.co/vemosoveveb/js6BSJD/epic_battle_simulator_1_unlimited_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387931/normal_6015c638498a6.pdfIn PDF document text
    • https://muzufuwuvul.weebly.com/uploads/1/3/2/3/132302955/jizaze.pdfIn PDF document text
    • https://rapexukiwivusa.weebly.com/uploads/1/3/4/8/134856806/tosoriruxujexiv.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/ihfjKib/wonokamuzatedab.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/KSidhcG/zijaledavisi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491965/normal_5ff24ebc869ed.pdfIn PDF document text
    • https://cdn.sqhk.co/lajakukilo/9ggdhiA/gokazizozabapamuboluzod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481516/normal_60355a921a999.pdfIn PDF document text
    • https://linebabeta.weebly.com/uploads/1/3/5/3/135317009/d4df987bfe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372104/normal_60015dcf7ca58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418574/normal_5ff082a04f0ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380681/normal_5fcf0c2500b29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417137/normal_5fd0e86d6c828.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382638/normal_60062b479c134.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497646/normal_6001595526ad0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498978/normal_5fed17011921f.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/gi0idge/67589908802.pdfIn PDF document text
    • https://cdn.sqhk.co/selodiro/Fdfvibl/dodgers_world_series_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8F 4696 bytes
SHA-256: 737dc60b628ca82703ce06638f4a2d236f1d39a63ac79c180fbf76e9bef471c0
font_01_sfnt_off0000fa7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7F 10836 bytes
SHA-256: 65868fbb32276ffa1945f262fd35f6d1817446c2b5d4cd679b5f587f4c7e824f
font_02_sfnt_off00011f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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