Malicious PDF — malware analysis report

Static analysis result for SHA-256 f600ae7391434268…

MALICIOUS

PDF

58.7 KB Created: 2020-11-20 03:37:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a29f2d87ee11a3a217c195a8270d5c5a SHA-1: decb7657f20ca6095ec1c42f8e6258116dfecf77 SHA-256: f600ae7391434268e04ed26ad2b1109afcfeab18c309404de10a857557b734d0
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to a "Ryobi brushless drill manual" and uses wkhtmltopdf, suggesting a lure to a potentially malicious URL. The embedded URL `https://trafftec.ru/aws?utm_term=ryobi+brushless+drill+manual` is the primary indicator of this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=ryobi+brushless+drill+manual PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d054b146-4957-407d-b151-04690dfac28c/shotokan_karate_stances.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/73078356447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f010653-bc2b-4c8c-8b7b-0bc2b51e6a72/mugewoxejifobaruwope.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/vekabikeponimejil.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/commas_between_adjectives_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b476af3-676d-40e4-b5d3-a3a6c5dee2f2/pizinamilonexolawilipuji.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/past_form_of_write_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3341404-868b-42fc-ac8b-a1f546054fc4/watozaxisonag.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/fowotaxonizogaxub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c50c624-6d4f-4eaf-be6e-b9d5f7693a65/69422730371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21590f37-d50d-4256-b820-440b56a21eab/wuvetaderepe.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/sawopolapidunejirudax.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_off0000aa4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA4D 5312 bytes
SHA-256: 400c1c4b0fe7bcea01d269962a64034d59853074aa0ed38425b1b745598aa4f3
font_01_sfnt_off0000bc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC31 10420 bytes
SHA-256: 8a12ebb90d8377551a341b962e053e59ee967d46b7b9eebc8b0bec5e4a22367a