Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c2c6fd872dbff8…

MALICIOUS

PDF

76.8 KB Created: 2021-03-22 13:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a00c5453b3739d6db5caf9adb4b3b7ea SHA-1: 6735929b8455119dd71901e5fd11ec311e55ced8 SHA-256: c8c2c6fd872dbff82db94c54ce4b6ecc128ee8d39aad82c0dfe3b616b6056ff4
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a search result for a product manual, likely a lure to direct the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and the presence of numerous URLs suggest an attempt to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://leonvi.ru/wix?keyword=graco+turbobooster+grow+manual
    • https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/jamelapemow.pdf
    • https://cdn.sqhk.co/luwukamuku/gVPnY0R/yahoo_finance_spy_performance.pdf
    • https://cdn.sqhk.co/wemorapi/jflCqib/warrior_cats_amino_confessions.pdf
    • https://static.s123-cdn-static.com/uploads/4446633/normal_60052a1c2b0a9.pdf
    • http://bajuzupur.22web.org/can_you_listen_to_harry_potter_on_audible.pdf
    • https://cdn-cms.f-static.net/uploads/4376619/normal_601a5d5d9233b.pdf
    • https://cdn.sqhk.co/xaxovowupofa/ewThbW2/connect_a_plug_puzzle_game_free.pdf
    • https://cdn-cms.f-static.net/uploads/4416319/normal_6031af22aaee5.pdf
    • https://cdn-cms.f-static.net/uploads/4392210/normal_6020fda29b384.pdf
    • https://static.s123-cdn-static.com/uploads/4413575/normal_6006e56adb355.pdf
    • https://zusabave.weebly.com/uploads/1/3/1/4/131406295/susoziwabewofenina.pdf
    • https://ferafavobob.weebly.com/uploads/1/3/4/6/134671558/8931462.pdf
    • https://cdn.sqhk.co/sagitusat/hcvgdhg/54540503848.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nelifudo.epizy.com/pukebeperoxibaxefiguzi.pdf
    • http://walaratetev.epizy.com/ginoginijikojizoxu.pdf
    • http://sitasuwa.epizy.com/libokejogedajelasize.pdf
    • https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_2ab34c8f5faa4f3d8e98a7f8c61c784e.pdf?index=true
    • http://varogofef.epizy.com/55099719914.pdf
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_acbf0bf0499c44468cdd7b1f3e428a68.pdf?index=true
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_ab074a11cde945499dfa032a8fb4e260.pdf?index=true
    • http://zufizuride.rf.gd/pdf_to_word_file_converter_software_online.pdf
    • http://sewasijibakel.epizy.com/canon_in_d_classical_guitar_tab.pdf
    • http://makowopo.epizy.com/50466500493.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_off0000ee7c.bin
6a962ed509f48996076f29e6d683288570fe9338d2f186a709009f35a2a7b6e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7C 5380 bytes
font_01_sfnt_off000100c4.bin
af4afc723bf7088ee7a8ff720ceef535890cd1b20d8080d8efe611517e6ded01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100C4 10348 bytes

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