Malicious PDF — malware analysis report

Static analysis result for SHA-256 986d10ba94825a2c…

MALICIOUS

PDF

91.2 KB Created: 2020-12-26 05:43:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 287daa3928d7d7fc6ea4a1262837aad1 SHA-1: c436e7abcb5b947929cf3bfa9493ed450b589db6 SHA-256: 986d10ba94825a2c45d4c59ad3fea01df339cd2af2e4e279cadef0ec00c87920
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF with a high ML classifier score and ClamAV detection, indicating malicious intent. It contains an embedded URI pointing to 'trafftec.ru', likely for phishing or malware distribution. The document body, though heavily obfuscated, references 'Epic games fortnite apple', suggesting a lure to attract user attention.

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
  • 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=epic+games+fortnite+apple PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500001/normal_5fd369c8ddfaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495269/normal_5fc04edbba3da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403560/normal_5fa2c3097765a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466161/normal_5fc56147ac080.pdfIn PDF document text
    • https://cdn.sqhk.co/fetadupozo/jeih3Zz/35868810069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485570/normal_5fb9b80d592d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387814/normal_5fddfbce7badd.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/V7ihjdJ/20894517507.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/gajabedafot/54797455344.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/81380273662.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/pojavotupajifegimozak.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_off0001268f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1268F 5292 bytes
SHA-256: b4b90e8f084356a63ec52cef825b5a92698fc05398230dd54ebd4703458b7522
font_01_sfnt_off00013883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13883 11584 bytes
SHA-256: 7a6891fc7519fde05999cad23ceb0a082c2c14d93afe99ef4b22320d7ba14498

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