Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdee006a24107784…

MALICIOUS

PDF

67.0 KB Created: 2020-12-17 22:25:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 06cb81c874a27ea698e8ffb3fd2278b1 SHA-1: 081383e0d7d75b6ae138899d464a2b1d166bd7e9 SHA-256: bdee006a241077849877bcc7298c3a6a8be05e696a78d88da12df977d4d72842
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?utm_term=meiou+and+taxes+download'. This indicates a phishing attempt designed to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/strik?utm_term=meiou+and+taxes+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_5f9d186084244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5faae4a710e76.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/essentia_group_laval_qc.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/zakemunurapugagokuduvuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/rujijasukosagonusore.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/95402412441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c8edc4f-2de5-4272-9092-2532fe15b1d9/2088670885.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/galiwaxuwoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c901b5-8181-46fa-9aec-3f2c449ceb49/vofidonubegokibi.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/relediwatudesoginiwipaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529de68d-b594-41b7-994c-4d482d879838/68447690851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eecdf8a1-4e6f-4bed-ad24-a2a4c6c32f6e/how_to_unlock_the_forgotten.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_off0000ca7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7D 4888 bytes
SHA-256: 499a242ff2ecd0b8942c471f6bdffc98dc96a3fe4493141cfc9506a86bfc22bc
font_01_sfnt_off0000db4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4F 10524 bytes
SHA-256: 92c0e42adb05a7fafdc85f822991d272e5fdc905f53fbea73b181063d014b776