Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b24f086f768550f…

MALICIOUS

PDF

58.8 KB Created: 2020-12-22 15:34:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 2ed27dfd5941357827ebcd94c2c1785c SHA-1: 25f0025cadbe3147f17c8e10875b58dce6bb97ba SHA-256: 6b24f086f768550fb0c954db6c20ad17b1a6871a133f3ee3c291f04915fd5f6c
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely a malicious domain used for phishing or distributing further malware. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Flip 36 goal zero'. No scripts were extracted, but the presence of an external URI and the ML/AV detections strongly suggest a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=flip+36+goal+zero PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369317/normal_5fc931109ad8f.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/56a60438-6c1a-435f-9c11-d27141c3ff17/venus_mcflytrap_costume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3a57698-9a44-41ef-b6c6-f86a314b5bf3/65811322354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/633d2aff-160c-4381-bc8c-39856c7bb146/cricut_explore_air_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/dovetiwimexigegimatewaza.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b890f2297e36a9f98a92/t/5fd15e1fa9eaf43bd8462043/1607556640104/78892833780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a6fd415-0640-43dc-901b-953e04a77934/dasuvonevadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e177b06-b180-4341-9400-5f16202e7321/65980049462.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc554abdf132613bbdafb9b/t/5fc995fcfedaa13a485bc27a/1607046657380/maze_3d_obj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8beb382c-528f-41d8-84a9-9a7896b312c4/paypal_error_code_10001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94198319-058f-4707-8a92-61dac8f89aa0/craftsman_radial_saw_stand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7462f2-c0d0-46ef-b30e-05d614647038/60281525614.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_off0000ab85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB85 5132 bytes
SHA-256: 0f3d6dbebb4ca5880a8c80b1d6950e41c82eeb308fe97f5c9d94ee5c454c711f
font_01_sfnt_off0000bd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD17 9892 bytes
SHA-256: 46449a6fceb3e175386dfc4bafec88f30d6aa8bbc15cae4881c8aa7dc9122cc1

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