Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ff5dbbb200cc532…

MALICIOUS

PDF

63.2 KB Created: 2020-12-10 16:49:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 65d0cb7d7a591eaf2051260bc6914730 SHA-1: e66799b43c4470582152e958f3408194d9c3bb4d SHA-256: 6ff5dbbb200cc532115998007314f01fae02a98ea6453fa6def899dc4035a217
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'trafftec.ru' was extracted, which is likely part of the attack chain. The document body, though heavily obfuscated, contains references to 'Netflix movies macbook air', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/aws?utm_term=netflix+movies+macbook+air PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/befijofubosupofuwanurelos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eab716f6d44b07bedc8b/t/5fc218ee08845d0924d22c49/1606555888038/36834441082.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d18a7848ba205d31d661/t/5fc695fea97599144edf81a5/1606850046865/nevivibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/978460c1-abe8-4046-885b-899c6104029f/bandicam_email_and_serial_number_2017.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5e80cb3e0f577146f9aa/1606377089198/vuwigagororazabuliril.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5cfc3c6d964583643b87e/t/5fc880f690a4f8549d7ac4bb/1606975734195/80140320727.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c859b1ed03538a1ec81/1606290565597/74127408572.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/60393662972.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/dragon_nest_lvl_1-_95_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/56960983394.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/22704063530.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_off0000b888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB888 5328 bytes
SHA-256: 96ace411d216ae58f1c9bc62c42ee9cffeb004bdf7b75ab07053657c6c57255a
font_01_sfnt_off0000caa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA5 11292 bytes
SHA-256: bf1adab2e21d22e3a2a01d1ddc4ae183988a48d2653aac44e4ed4541bac69e3e