Malicious PDF — malware analysis report

Static analysis result for SHA-256 5778bba1ca4cafb4…

MALICIOUS

PDF

65.3 KB Created: 2020-11-19 06:39:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 689935c3c124121897acdc97d9bb8bea SHA-1: d6403b20e9af3205fb9da322e0e112c2223c1a79 SHA-256: 5778bba1ca4cafb43241ed4891f79a778503fc9bb37b653fccbc2f573da27d38
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://traffset.ru/123?utm_term=twisters+gymnastics+near+me, is presented in a context that mimics a search result, suggesting a phishing or social engineering attack. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=twisters+gymnastics+near+me
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8736b513c31.pdf
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/2d8079f5f.pdf
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5fb385ef30a5a.pdf
    • https://cdn-cms.f-static.net/uploads/4455178/normal_5faf5e1270f98.pdf
    • https://cdn-cms.f-static.net/uploads/4493610/normal_5fad31b54da3a.pdf
    • https://jikanozirupeson.weebly.com/uploads/1/3/4/6/134656521/duzikixotunojo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/votubukaxogilix/malonivavasoboseraxaf.pdf
    • https://s3.amazonaws.com/sazariwapa/58483303807.pdf
    • https://s3.amazonaws.com/jepinebawo/37729136254.pdf
    • https://uploads.strikinglycdn.com/files/39aa6811-efe3-40d3-a980-36a28f9e26b5/42504510970.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/example_construction_lessons_learned_report.pdf
    • https://s3.amazonaws.com/wiwuxot/55801553967.pdf
    • https://uploads.strikinglycdn.com/files/996bba20-97b9-43f7-9f44-fbcf7052a0a9/everyday_life_coldplay_piano_sheet_music.pdf
    • https://s3.amazonaws.com/muwemivumazulax/hebrew_aramaic_bible.pdf
    • https://s3.amazonaws.com/wewuxuviwar/66432900784.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf54.bin
b8b6b6ee4abf13733d066a9e55c41a47209a83068b70d8d1584ae0107de31598		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF54 5232 bytes
font_01_sfnt_off0000d120.bin
8c3214b3b9704d2bcbac11f6cc2caa78ad23d437776d2126fcc77ef9fe9d28e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD120 11820 bytes

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