Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8817ff15449612e…

MALICIOUS

PDF

79.1 KB Created: 2020-12-29 12:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1e0dd1914d32b879a4a6ff2840baf302 SHA-1: 3184eb4088af87eeaa8235135fc7136f00c2f7e7 SHA-256: f8817ff15449612eaa212011552160764ec46b7b806163e6538bde45fe077db7
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'trafftec.ru', which is likely part of the phishing lure. The document body, though heavily obfuscated, appears to be related to search terms, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=carpet%20cleaner%20walmart%20hoover PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5feafa5819da9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494874/normal_5fe8f31eec551.pdfIn PDF document text
    • https://cdn.sqhk.co/gilitejeku/bdibhis/76086873223.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/0666c8f2-6702-497c-8369-d25367ee0800/pottery_barn_quilted_velvet_stocking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46949086-9d21-46ea-a60c-943d67a98a83/42311651579.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/6364751924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a4c7cad-94d0-49d8-907e-9d2641c0ddd6/vogugumekowikumalotebobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d5bb12-e626-4b2f-a13f-38fbec5c11a5/presente_de_subjuntivo_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38ab04d9-d4f5-4b7a-af2e-e3eb419337ab/super_saiyan_5_gohan.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/82148641039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/770cd698-3455-4eb5-9173-2ed90c8dd704/kuradav.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_off0000f9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A4 5052 bytes
SHA-256: 58a623e6d1ecf0cd15676e0eea7b15746f1ef8d24ae63552092f9fd1db17e478
font_01_sfnt_off00010abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABC 10876 bytes
SHA-256: f1c1d1e2392927f5e1ef1ad4f800a131cf917e2c70b15cbc629570c6e188dac4