Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6261fede0f89697…

MALICIOUS

PDF

77.4 KB Created: 2021-03-15 09:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6afdf265808e548616e2451f9e0b3256 SHA-1: 14f5807d7bec5e8576b32ddee088251179230893 SHA-256: a6261fede0f89697e75c7b644e8f2d2e9bed6d8036c1e72935ed64b898a0929d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'sm64 rom hacks 2020' and the PDF creation tool, suggesting a lure to a malicious website.

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://maypoin.ru/wix?keyword=sm64+rom+hacks+2020
    • https://cdn-cms.f-static.net/uploads/4369343/normal_600a4c9a8ec87.pdf
    • https://static.s123-cdn-static.com/uploads/4452171/normal_5fe50c4d65ab8.pdf
    • https://cdn-cms.f-static.net/uploads/4501632/normal_6024219f4dad6.pdf
    • https://cdn.sqhk.co/dukoredod/ibIgejh/64759761991.pdf
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/pejafarim.pdf
    • https://lerofiputa.weebly.com/uploads/1/3/4/3/134367001/rawibinutot.pdf
    • https://cdn.sqhk.co/kinanekoxo/bhagggi/cookie_cats_pop_songs.pdf
    • https://static.s123-cdn-static.com/uploads/4454965/normal_5fc6ccb26c017.pdf
    • https://static.s123-cdn-static.com/uploads/4367927/normal_60043c24a5a65.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gorajikunobixi/the_island_of_dr_moreau_1977.pdf
    • http://giwoxig.rf.gd/73039452511.pdf
    • http://dipuritaxuxok.rf.gd/6886859891.pdf
    • https://s3.amazonaws.com/wavunot/wenopam.pdf
    • http://jojanotesejivi.epizy.com/54941529450.pdf
    • https://s3.amazonaws.com/zevutebulaworel/cued_articulation_worksheets.pdf
    • http://dozonexupiwef.epizy.com/what_is_a_metaphor_for_stubborn.pdf
    • http://vonolukover.epizy.com/ultimate_questions_john_blanchard.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_off0000f1c6.bin
9c827632a5bf97a808a5b0ff0953b2cb7d8ceff5c8fdb3ebf4876efb6b0de2eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C6 5688 bytes
font_01_sfnt_off000104f9.bin
81cbdba7cbafb878a82a9de9b67d87e5c523fecc0e2b1613fbbb20275a2349ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104F9 10096 bytes

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