Malicious PDF — malware analysis report

Static analysis result for SHA-256 83fc6f86f20ef0ea…

MALICIOUS

PDF

76.6 KB Created: 2021-02-20 08:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 071dd330aa594ec879205dc431a87d50 SHA-1: 1ded8cfcf4be2fa93ecbde63ec676d8746c6535c SHA-256: 83fc6f86f20ef0ea773ceaf04b625c472d9a00d27a2b4b22288ea9ce722b907c
96 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, with multiple embedded URLs pointing to potentially harmful sites. The presence of these URLs suggests an attempt to redirect users to phishing pages or download further malicious content. No scripts were extracted, but the overall structure and heuristic firings indicate a malicious intent typical of phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=head+injury+puns
    • http://zdsshop.top/asuran_video_songs_hdx97c0.pdf
    • http://lijaziba.22web.org/chrome_remote_desktop_android_to_pc.pdf
    • http://masterpowerpoint.com/38207655672314j5.pdf
    • https://kalogipewaga.weebly.com/uploads/1/3/4/5/134595512/gebedikuroj.pdf
    • https://pudijamarotu.weebly.com/uploads/1/3/4/0/134000536/8262143.pdf
    • https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/8244760.pdf
    • http://hrushch.space/4696427927007o4r.pdf
    • https://tedotedonux.weebly.com/uploads/1/3/0/7/130775879/61881a4d82.pdf
    • http://fogazino.iblogger.org/torebopibudurimabamaxaxa.pdf
    • https://xaforegitada.weebly.com/uploads/1/3/1/4/131413040/xirejamimipegid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rozibata.epizy.com/how_to_create_duplicate_worksheet_in_excel.pdf
    • http://bapomeguradoka.rf.gd/control_variable_in_research.pdf
    • http://ketavulamuxi.epizy.com/basic_hardware_parts_of_computer.pdf
    • http://petizitopebil.epizy.com/71870757923.pdf
    • http://panafinuniro.epizy.com/timisakuvejunawanozagusa.pdf
    • http://mevomum.epizy.com/2614334231.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_off0000f00a.bin
75ffb75b39ace634a7b31af90a674ef46c6622eb4c8010de4d5297231e88c11a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF00A 5060 bytes
font_01_sfnt_off0001015a.bin
69315dd175624718fd1f1340460077c6571b8e568f22f6fd056b918d79cedd80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1015A 10500 bytes

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