Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba194b2b37079734…

MALICIOUS

PDF

72.7 KB Created: 2020-12-27 14:04:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e0fb6eb27d587e3fd923ecb5d26c6265 SHA-1: d42b4ce4d7b81f11dca6a70839bc875ecd4d04c0 SHA-256: ba194b2b370797348e9175513b4dec3aaa2f1a9c01d0d4d16d79e4cc46ff9c38
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, likely masquerading as a movie trailer link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/123?utm_term=don%2527t+speak+movie+trailer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473632/normal_5fafdec43591d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5f94750493abe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fa68473e4d99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f8cf460d65ef.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/crhifg2/hd_wallpapers_for_mac_retina_display.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369777/normal_5fc869ca6b123.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/ihhghgr/gisasibemibesapijos.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/f374e5e2-9455-4254-b62d-b61e7413b1e2/debemodazofopodomora.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/lemawulotakinakifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961b8a07-a71e-4418-94ea-17b05566f913/clash_royale_apk_pure_update_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/ruruguxelejewuvije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6da9bfbf-7522-490d-a677-0b73c7306e6b/89694336724.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/68240725770.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_off0000dd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1D 5120 bytes
SHA-256: 317d3c82a863389133e066a83140b2ff69ba7ae9e29b52ed3cccc412591c1c9d
font_01_sfnt_off0000ee87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE87 11224 bytes
SHA-256: 00151ddbd309b25d25d6fad39e100e72c05dba7de89485e7616949744c7675e0