Malicious PDF — malware analysis report

Static analysis result for SHA-256 c199b0a90cc8cc6b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-15 05:43:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfcbdabd37d337a9e434aa8352d3dd98 SHA-1: 2c3eae565efdcb16223233f9de08f27abb81c615 SHA-256: c199b0a90cc8cc6b60f98bc295860883ddb8eb95be2b1a6704395e549cdf928c
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for downloading a study guide, suggesting a phishing or social engineering attack. The presence of embedded JavaScript, though not fully detailed, further supports malicious intent, likely for payload delivery or obfuscation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://druttle.ru/wix?keyword=primal+leadership+study+guide+pdf
    • https://cdn-cms.f-static.net/uploads/4369629/normal_602744c3bb90c.pdf
    • http://newsportstechnology.ru/bojiloby0s3.pdf
    • http://electriccannoz.club/remington_700_long_range_6.5_creedmooru70g8.pdf
    • https://cdn-cms.f-static.net/uploads/4499005/normal_603983ce3f969.pdf
    • http://fewafef.iblogger.org/vertical_navbar_bootstrap_4_template.pdf
    • http://dazifarulonun.iblogger.org/52732091432.pdf
    • http://ximoteduzax.22web.org/midaninejawonelal.pdf
    • https://static.s123-cdn-static.com/uploads/4366311/normal_5ff655e3620d5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tolimimagag.epizy.com/takawib.pdf
    • https://uploads.strikinglycdn.com/files/297c7c9c-1502-4193-b4b8-bb7d7787fccc/46131047560.pdf
    • https://s3.amazonaws.com/xapidajovaji/wulib.pdf
    • https://s3.amazonaws.com/feseni/radagigizadokupej.pdf
    • http://fukewabukitiv.epizy.com/telecharger_les_journaux_algeriens_en.pdf
    • https://uploads.strikinglycdn.com/files/c315c536-5374-4e04-b6b1-a63221215f27/go_go_elite_traveler_manual.pdf
    • http://ruguweronum.rf.gd/canon_lide_110_user_guide.pdf
    • https://s3.amazonaws.com/gasodamuza/31803612993.pdf
    • https://uploads.strikinglycdn.com/files/524f2a07-bdfd-4a1d-bbab-5b4914f1f28c/vomolejosax.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_off0000e43f.bin
0e0d6b3e3f888d5360076386880d63aa0a2afad6a02d8450c6a82bc4cba4a091		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE43F 5556 bytes
font_01_sfnt_off0000f703.bin
6d1fa2fad0fbdb1b3e43bdf467d771fd3101340ffeb994b093c61e2f8d96d3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF703 11248 bytes

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