Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ab2b5632f2462d…

MALICIOUS

PDF

85.2 KB Created: 2021-03-17 02:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32b1ce4ea7fd2ccbd3d8562abdf4a43b SHA-1: 58f96bcb105382eff899fe41a091a762b5f64af4 SHA-256: 68ab2b5632f2462d1eb5dbb4e8c93b63359e9a8f4c9fae621fc488dc9fb9e897
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting it's part of a link farm designed to direct users to potentially malicious websites. The embedded URL 'https://dugedepap.ru/wix?keyword=blender+weight+paint+shortcut' appears to be a lure, and the PDF structure itself is indicative of phishing or SEO manipulation tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/wix?keyword=blender+weight+paint+shortcut
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/52180.pdf
    • https://lemorixumo.weebly.com/uploads/1/3/4/7/134748879/zewasu_filodenaroz_solavo.pdf
    • http://ru-1.casa/how_to_start_with_html50x5pe.pdf
    • http://inmyshtangen.xyz/wimekusejivuwumadhcg6i.pdf
    • https://static.s123-cdn-static.com/uploads/4460457/normal_5ff063869507e.pdf
    • https://zogazipo.weebly.com/uploads/1/3/2/3/132303407/suwinubo.pdf
    • https://cdn-cms.f-static.net/uploads/4385030/normal_601c5e1e153dc.pdf
    • http://driveformclanemilwaukee.com/define_energy_independenceeoxs8.pdf
    • https://tugiwosigef.weebly.com/uploads/1/3/2/7/132740290/54440f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jisunopesaluzi.atwebpages.com/95086510692.pdf
    • https://s3.amazonaws.com/zibenoroduzuw/jet_18_inch_bandsaw_manual.pdf
    • https://s3.amazonaws.com/rojalexipokadaz/91634877356.pdf
    • https://s3.amazonaws.com/kiwopusafize/63826625610.pdf
    • https://3c1efe6f-6e34-41bb-a2c4-2be85dd3cb33.filesusr.com/ugd/41f880_da642412b6194332b854aaab45a6863e.pdf?index=true
    • https://4cd5a77a-be8d-44ba-8952-4177873115c4.filesusr.com/ugd/930050_e7e717273fcf46b19ec051af8057fb97.pdf?index=true
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_baffa138850d4876b39e7458eda4501d.pdf?index=true
    • https://f635e5d9-31b1-4f19-b758-7a623be10181.filesusr.com/ugd/6cf0f5_7afe4a75a5334c66a718f2957090c8c4.pdf?index=true
    • http://lixugafepujijoj.onlinewebshop.net/zewazizi.pdf
    • https://bed2d873-735b-46bb-a8a3-264d0455df4e.filesusr.com/ugd/03ede2_ab6fbcb1cb74476bb22bc68eca127b1f.pdf?index=true
    • https://s3.amazonaws.com/bejexe/layout_border_radius_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f733.bin
483ef2017f7857b56b355a25fbd487d08a98d2541f501a63a26be0e2637e7d62
pdf-font-stream PDF embedded font (sfnt) at offset 0xF733 5476 bytes
font_01_sfnt_off000109df.bin
733eceb047ca77ebfbcff8492d49c75ef802a8d9ca2731030ccc563fe3bda1cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x109DF 11892 bytes
font_02_sfnt_off00013289.bin
e475b127670123e0992d690554a82105660adb0ac795948380663d104441f777
pdf-font-stream PDF embedded font (sfnt) at offset 0x13289 16064 bytes