Malicious PDF — malware analysis report

Static analysis result for SHA-256 7416077de4843af4…

MALICIOUS

PDF

69.3 KB Created: 2020-11-29 02:49:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a060e148cfd6b13cad1fceb8be78a21c SHA-1: 566f3841ff7dee2284da298cf6fac9269aff17f7 SHA-256: 7416077de4843af46292de662522324364461d135ca05d3f5b14a21d666d7d6b
116 Risk Score

Malware Insights

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

The PDF file contains a malformed stream and a high ML score, indicating malicious intent. It also embeds a URL pointing to 'trafftec.ru', likely intended to redirect the user to a phishing or malware distribution site. The document body is truncated and unreadable, suggesting an attempt to obscure the malicious content or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=tru+talk+video+song+full+hd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450418/normal_5fa32b2ae3481.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461485/normal_5fa54c002b65e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476123/normal_5fb5bec4d64b3.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/aa9f88d9-b58f-44e7-a8c9-3026199c9192/naduvitiraboxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d20a2465-8d33-4002-af95-0c4586ff1d78/gopexebumorir.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/biology_ncert.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38423822-81de-4ed5-b514-b893494a937e/free_download_faded_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62ab83bd-7fbd-467f-90de-ce28c46a3318/78795996677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0d356a3-9616-41b3-8e03-4a1149b7c418/club_penguin_item_adder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/312e5301-ed99-44f7-a7c0-67a14298dd07/9469514327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0851760-47ac-482f-97ba-ee5ee9caf63e/granny_unblocked_games_66.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_off0000d346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD346 5244 bytes
SHA-256: cc38e8d5096d97607a326037d219869cf314bb66e0cb2fa6289ff4bc096dfb05
font_01_sfnt_off0000e51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51A 10576 bytes
SHA-256: 9b92320714930b423d8e2f2979529911e2e5738d8ab181696fb41d1efd997a15

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