Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f7f3b927d4f98c…

MALICIOUS

PDF

71.3 KB Created: 2020-11-18 01:39:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 6d104cb92d2e9eada414ed5e02117bd6 SHA-1: 67bcd70ba00001c59ca7d2b7d12dec329678cab8 SHA-256: 26f7f3b927d4f98cee4b0560cce9a9217289b5bc1ce7d143febe59ac3ad80d45
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL leading to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to reference '3 point contact ladder osha', suggesting a lure to trick users into clicking the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://traffset.ru/123?utm_term=3+point+contact+ladder+osha PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402247/normal_5f93d58381220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378831/normal_5fa1ebf00343e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374178/normal_5f88f9c5736a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_5fa38a99eb4b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379217/normal_5fa00973221f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413126/normal_5faa43be1ccd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_5f9559c5c80d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5fa47222e3e02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427076/normal_5fa3af47d88d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e560c63-c4da-49cd-9396-6f275d5ebc2d/gowafekefolopunebekotonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5d82319-5d99-46d4-9b1f-9bf5e8611981/36263346385.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/36207065226.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/contract_agreement_between_two_companies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92bca079-9cee-408b-9e73-a7e6daffbb09/51258015354.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA42 5232 bytes
SHA-256: 2793647739d512a4efc97880b27c68f2ec68ea2725a8d1d46f5500420d48a317
font_01_sfnt_off0000ebfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFA 11268 bytes
SHA-256: 1db558f39e6de70d7e510f304c31e9d656d338e26647ef81ea7f1c68084a4f6a