Malicious PDF — malware analysis report

Static analysis result for SHA-256 da708f2802b3e6bb…

MALICIOUS

PDF

74.7 KB Created: 2021-01-04 01:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: aa3da285a0ea3fd872f0174c91b24370 SHA-1: ed573e1e3a1c28b725fbf7453abae8227c7b303e SHA-256: da708f2802b3e6bbd19fa859643302e6567ae772cc227a26f8c51755a1a5545d
96 Risk Score

Malware Insights

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

The file is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafftec.ru', which is likely used for phishing or to download a secondary payload. The PDF structure and content suggest an attempt to trick the user into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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=gale+hunger+games+actor PDF link annotation
    • https://jipidonano.weebly.com/uploads/1/3/4/3/134340070/palukewugaxipik.pdfIn PDF document text
    • https://cdn.sqhk.co/firokizita/iiZjbqR/briefings_in_bioinformatics_word_template.pdfIn PDF document text
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/e73d151dda5.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/ONNKBha/7921635713.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/f63d8f73-fb55-4d44-84aa-96374460b076/75023203984.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/nodelasiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/574844dc-4d5e-4097-9acf-a2bd9b6fa88a/41875645505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b477fad-b5bf-4514-945f-968d3e2e4052/rechargeable_lithium_aa_batteries_amazon.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_off0000e8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D1 5244 bytes
SHA-256: 8b27d4805d5e3bf9e49ac3298702c0893910b9817c155e63b162e881a91042d7
font_01_sfnt_off0000fa7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7D 10408 bytes
SHA-256: e48ffee80a93dca0f977f59095f0b79fa263d4376e85893ec4546e40c4c05a16

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