Malicious PDF — malware analysis report

Static analysis result for SHA-256 69731bac55584ffc…

MALICIOUS

PDF

76.7 KB Created: 2021-03-30 01:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8143bb4a2ffd78eb9de4bdb98fc02263 SHA-1: d3c55ffb0ddff99977f462224ce1052ca72461aa SHA-256: 69731bac55584ffcd8fced6fd1bf22269e985a2ff4b096153cd5e33eacc4f210
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Google sites developer tools' and 'wkhtmltopdf', suggesting a lure to a fake resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/wix?keyword=google+sites+developer+tools
    • http://card2card-perevod24.site/94190800220e26jt.pdf
    • http://moshon.space/30517441254vw2gh.pdf
    • http://hookup750.website/81277680103kj4b4.pdf
    • http://mamubisuk.mypressonline.com/5_methods_of_conflict_resolution.pdf
    • https://cdn-cms.f-static.net/uploads/4459170/normal_601eeabde6583.pdf
    • https://doxefifuz.weebly.com/uploads/1/3/0/9/130969363/zinijezufaxewo_bopekodam_pufugot.pdf
    • https://junurewumopu.weebly.com/uploads/1/3/2/7/132740614/zokorekatikit.pdf
    • http://ampinternational.org/fasunutilufulawedo4vykw.pdf
    • http://avto-document.site/98591107807w97tx.pdf
    • https://sizokagijabid.weebly.com/uploads/1/3/4/6/134652394/380ac0f958ba.pdf
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5ff5f13547347.pdf
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/4c684.pdf
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/kedikake-wakajuze-lavavovisukali.pdf
    • http://fijazubelanulek.mywebcommunity.org/bcd_to_binary_conversion_example.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/601dc9df-c6a4-4342-8eec-c6547c55702b/kuwutijavobig.pdf
    • https://uploads.strikinglycdn.com/files/ecdab53b-e493-4618-b0fd-f9c64a16f3ed/harry_potter_audiobook_spanish_free.pdf
    • http://fidegaf.atwebpages.com/animal_farm_chapter_9_questions.pdf
    • http://siniligavaxuvul.onlinewebshop.net/4124228543.pdf
    • https://uploads.strikinglycdn.com/files/8a209f66-3f5e-476d-a144-3e121f886e83/19611132887.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef95.bin
bf1202420b59bdf0fe6c3294e083345de7eaa03ee371b9dd348f3749b0a6bac4
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF95 5008 bytes
font_01_sfnt_off000100bc.bin
960f937226271242f25b0a4c17e7e5b4ecf84c209e5cec3761cc2a67a035f957
pdf-font-stream PDF embedded font (sfnt) at offset 0x100BC 10996 bytes