Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de810470c06e186…

MALICIOUS

PDF

68.9 KB Created: 2021-01-06 05:45:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 200e444e43c40be3d63ca827870b1d3c SHA-1: 1d4c5618d61645368a667f5a8759dd3af42539a5 SHA-256: 8de810470c06e186bfe98510a102bba2d376b2d580a9dcafa04224c59dc503c2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'traffnew.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URL and the detection signatures strongly indicate a phishing or malware delivery attempt.

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://traffnew.ru/123?utm_term=two+phase+commit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5fe7379c2bf75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_5f992c7837e13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370529/normal_5ff177256b6d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428062/normal_5faa08201c8e8.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/ibUzNtk/nick_jonas_camp_rock_2_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/tabawapizak/d5had6S/infamous_iron_man_funko_pop_gamestop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446045/normal_5fd7bffaa82a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378170/normal_5fcbebcfbe5b6.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/bd1e473d-8f2a-40be-a20c-9e332b0272f7/kbs_to_gbs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2dd77bd-c32b-468f-b289-e883a14a99c0/tolkien_on_fairy_stories_flieger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ab7a934-d37f-421c-ad06-b1d3896750e7/47898602773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da45c962-bd58-4dea-9008-d6215f5382ee/66783206412.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_off0000d226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD226 5084 bytes
SHA-256: a513e7a521d326c2a2d8ae26be4e18ddbf9f82506a94b2fc1004a94612e4938e
font_01_sfnt_off0000e360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE360 10672 bytes
SHA-256: be220b5f7978826ac2bf72b47bc55f39e6460f413f5051d740a0c2346b7ed76c