Malicious PDF — malware analysis report

Static analysis result for SHA-256 3faaba50a0f47728…

MALICIOUS

PDF

75.2 KB Created: 2021-04-08 10:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cadd3c954984fd9e646aa2251ad4883 SHA-1: 0ff74eea1053c6352afeb23d6a0eb61d81b256d5 SHA-256: 3faaba50a0f477289c5683e38b9301e7d12018b5264df39fa2f38b150446f6d2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a URL that appears to be part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, contains text related to an obituary, which is likely a lure to entice users to click the malicious link.

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://botokaw.ru/wix?keyword=bill+tobin+obituary
    • https://cdn.sqhk.co/vonirosidejo/hc6vvBg/47346045144.pdf
    • http://net-klientov.ru/349551983395j85t.pdf
    • http://edayafar.xyz/75662098877a1xe5.pdf
    • http://subbellassecret.com/50200930865ckwm.pdf
    • https://cdn.sqhk.co/rojotuwo/8TU0ijD/telangana_gattu_meeda_chandamama_naa_songs.pdf
    • http://davebamonuzove.medianewsonline.com/suwirevakeripul.pdf
    • https://cdn.sqhk.co/safimowexaw/hU7VDib/70539463126.pdf
    • https://cdn.sqhk.co/xipapotug/gShaojY/fumafegas.pdf
    • http://familyit.pro/text_structure_middle_schoolfvg8p.pdf
    • https://cdn.sqhk.co/panajevem/hiMOig5/jupiter_merlin_worldwide_portfolio_factsheet.pdf
    • http://shopmzm.site/sepuzumifakazoghewti.pdf
    • http://itmax.info/diamondback_ar_15_disassemblyrlksn.pdf
    • http://llloooodddd.space/muludirurilagawutewijetekn9kzt.pdf
    • http://pedaxofanor.mywebcommunity.org/tibazonobezojumati.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://josesomesube.myartsonline.com/tokugavite.pdf
    • http://lojogonofar.rf.gd/collins_connect_answers_chemistry.pdf
    • http://jipinasin.epizy.com/importance_of_carbohydrates.pdf
    • http://wusuposakatoxel.myartsonline.com/red_trofica_terrestre.pdf
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_e80b49af02a14a5796b13a8f67080855.pdf?index=true
    • https://8c17aa34-c454-4d6c-a218-8929c845e329.filesusr.com/ugd/808cd0_1419c366995542099fe8e8dd447b1b37.pdf?index=true
    • https://4095172d-bd2f-4181-91d7-dd424e653400.filesusr.com/ugd/df73ab_6e72e55012ed45338a8c37c3a4e1d6c2.pdf?index=true
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_aad219f5a20944f0bfd0e830e4f3d783.pdf?index=true
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_f6fb68f70bfd4fb7b961f9e786129c9c.pdf?index=true
    • 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_off0000e7bf.bin
5305371ce1b454e7864a0355768721beef67145769d341c0ec7a3f2da07c0f53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BF 4792 bytes
font_01_sfnt_off0000f821.bin
ffe949b92e4bc2919c54557aea10ff374b8ca2b330ba499b05111d1020e912b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF821 11100 bytes

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