Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb307f7963c91bf7…

MALICIOUS

PDF

73.2 KB Created: 2020-11-19 03:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba22868d5e622b008ecbfb391917d9b9 SHA-1: a1e5fc1e0ffabae04f0c5d27bb48f63e6a9aa84e SHA-256: fb307f7963c91bf7986147cd52b2b916600aee7cd1427507e7373e7ab6b321c3
96 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier. It contains an embedded URL pointing to 'traffine.ru', which is flagged as suspicious. The PDF structure and content suggest it's designed to trick users into visiting this external resource, likely as part of a phishing or malware delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9866

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://traffine.ru/strik?utm_term=figuras+con+globos+largos
    • https://cdn-cms.f-static.net/uploads/4412762/normal_5f9d965f0ab26.pdf
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5fa9dbed33ee0.pdf
    • https://cdn-cms.f-static.net/uploads/4417313/normal_5f9ba721bd09a.pdf
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f8b767d0e7dd.pdf
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f872dc3c4927.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8aed8e83-adc5-4550-b7ae-3cae5ae9e3f8/pills_and_potions_lyrics_meaning.pdf
    • https://uploads.strikinglycdn.com/files/cb13d1ef-ff65-4592-a5b1-ea3673b7699c/ejercicios_de_metrica_resueltos_1_eso.pdf
    • https://s3.amazonaws.com/kudefem/goodnight_loving_trail_crossing.pdf
    • https://uploads.strikinglycdn.com/files/9d221acc-6133-466f-a37f-d71838ad7839/the_seafarer_poem_summary.pdf
    • https://s3.amazonaws.com/fusidejebi/jasoxogovudividuligizi.pdf
    • https://s3.amazonaws.com/zuguvoxoki/elephant_toothpaste_experiment_conclusion.pdf
    • https://uploads.strikinglycdn.com/files/01ef3dc1-cd24-4512-b0f9-5d3eb2114540/sorizotosonowobalukozobal.pdf
    • https://s3.amazonaws.com/muxozuvalubi/70140066234.pdf
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5ac.bin
1bd36f669d7c1d3b15d26e91f1c261aba94bb76fe9eba0404d508d726efd6bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AC 5060 bytes
font_01_sfnt_off0000e6f7.bin
c6ee720dac2cafe6236a4d571bf119034c923a6980fc84814691e59b08fb8010		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 11932 bytes
font_02_sfnt_off00010d8c.bin
292b67320f20e7e38814323bff47001ccb55b5eebb397aea8a254f3e91f57b87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8C 16096 bytes

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