Malicious PDF — malware analysis report

Static analysis result for SHA-256 3257a22e096bc020…

MALICIOUS

PDF

77.6 KB Created: 2021-03-30 22:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3367b01293d9b7204d5280cf838dada SHA-1: 9e236e9ea74a0f9fb670d641adb80aa5c4995d78 SHA-256: 3257a22e096bc0201c0be8b19204329935451c49668c3fd6fb58f9a5bbde6612
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://jumiwimov.ru/wix?keyword=yamaha+helm+master+service+manual` suggests a lure to download further content, likely related to the 'service manual' theme. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wix?keyword=yamaha+helm+master+service+manual
    • http://trend-sales.fun/rukuzawaefly6.pdf
    • http://goodsfor.life/popevonametapeug4v.pdf
    • http://alteramaks.world/philips_avent_3-in-1_electric_steam_sterilizer_instructionsc8qnz.pdf
    • http://mishgen.com/techstream_keygen_v1.6_download8qa7t.pdf
    • http://white-x.fun/wufufivjtf4x.pdf
    • http://armada.technology/nepolipujiwaryyjv.pdf
    • https://cdn.sqhk.co/xufatirumina/ibhchjx/vurolakurexewenobalawapix.pdf
    • https://cdn.sqhk.co/jotapepikota/ficOigW/nuwapu.pdf
    • http://belkwigs.com/dibujos_de_caras_de_chicas_facileszp1ou.pdf
    • https://cdn.sqhk.co/bareziwo/ahhjcvJ/friends_tv_show_trivia_quizzes.pdf
    • http://study-english-02.space/10535864010n0ktk.pdf
    • https://cdn.sqhk.co/madagijoj/ija7gg8/69205797934.pdf
    • http://idealsit.fun/capital_markets_elite_group_iban_numberxyzkx.pdf
    • http://faloken.22web.org/deep_freeze_alternative_open_source.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zezorug.rf.gd/define_sport_psychology_in_physical_education.pdf
    • https://c0771fee-1ba5-4dbf-bba5-a775c3d44c03.filesusr.com/ugd/544e7e_dfa7d86a0ba64107b0002ea3d19ffd2d.pdf?index=true
    • http://guvamimifufirar.rf.gd/20_minute_guided_meditation_for_relaxation.pdf
    • https://89e1056b-8c01-44a4-bea5-a80a497d444f.filesusr.com/ugd/6db6f7_bec3ee737f354c2aa18b91d06672e9af.pdf?index=true
    • https://4eff3ec4-d147-45d1-be73-876d9e1d0019.filesusr.com/ugd/efb3f0_63f474b0666e437c9e74f240b1f7053d.pdf?index=true
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_311ca4d95dd34c7d9926371662e5b1e8.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_off0000f195.bin
1b53538c4aa684a0ce2379490cf125ce2ada0b4084607cc5d7c89934c90c54c9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF195 5060 bytes
font_01_sfnt_off000102aa.bin
71bc3672a06b12e8217ee71bd70e396ae9eb9be8711c800b3dd56ae83b6c3925
pdf-font-stream PDF embedded font (sfnt) at offset 0x102AA 11328 bytes