Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7a599fca2fa495…

MALICIOUS

PDF

69.3 KB Created: 2020-11-21 01:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd5c251732bedf3f8dd3c38a842695db SHA-1: 75199e1acea9bc8855c33b9a803ea4ec66c48306 SHA-256: 7c7a599fca2fa495e97f01100c4b359ad550a3b4e92b9795574a25ecc93a1316
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. An external URI pointing to 'trafftec.ru' was found embedded within the document, suggesting a phishing or redirection attempt. No scripts were extracted, but the presence of the embedded URL and the high confidence score strongly suggest a phishing attack.

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/123?utm_term=magee+middle+school
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5faf8a2cb3061.pdf
    • https://cdn-cms.f-static.net/uploads/4480148/normal_5fb3e18762da9.pdf
    • https://cdn-cms.f-static.net/uploads/4412889/normal_5fac09b967140.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jamokaroxoj/69517132840.pdf
    • https://s3.amazonaws.com/pusolefosex/carousel_horse_invitation_templates.pdf
    • https://s3.amazonaws.com/potamotaz/names_of_animals_that_start_with_g.pdf
    • https://s3.amazonaws.com/vabedafozo/pukonivepifisife.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/tixexul.pdf
    • https://s3.amazonaws.com/pusolefosex/xasezabikejamosutodizafa.pdf
    • https://s3.amazonaws.com/patotale/budget_process_in_local_government.pdf
    • https://s3.amazonaws.com/xovekolamoxe/hunger_games_book_4.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c804.bin
5409c89ab48ff73b54a3f94d734c52aeea3b99d0ca770968521c49f1e835bc9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC804 4864 bytes
font_01_sfnt_off0000d88a.bin
7d3d6b474921fa6fcbcd3923d461cf50b890731b5f561d828da1860bba41152e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD88A 9896 bytes
font_02_sfnt_off0000fa69.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA69 4324 bytes

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