Malicious PDF — malware analysis report

Static analysis result for SHA-256 088446a53e9b833a…

MALICIOUS

PDF

81.0 KB Created: 2021-04-05 04:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0b19b51ee0f7a3ebfd4629a01bbbe3e SHA-1: 27203cea1bfc276aaeeec80315aedb14c9ffaae0 SHA-256: 088446a53e9b833a30cac130b5dfa89bf5813008a16589eb336a1980a7a46280
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. The document body, though heavily obfuscated, contains text that appears to be a lure, further supporting the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=chamma+chamma+mp4+song++pagalworld.+io
    • http://heymama.store/first_person_camera_skyrim90q6o.pdf
    • http://kengoru.space/11369722754q792b.pdf
    • https://static.s123-cdn-static.com/uploads/4423137/normal_5fcf82d206c05.pdf
    • https://cdn-cms.f-static.net/uploads/4421061/normal_604979c3ece35.pdf
    • http://lorem.space/rinnai_water_heater_rl94_manualklq22.pdf
    • https://cdn-cms.f-static.net/uploads/4464861/normal_60222a676e43c.pdf
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5fc895227135b.pdf
    • http://dabukim.mygamesonline.org/81811789487.pdf
    • https://cdn-cms.f-static.net/uploads/4447098/normal_60659405658e7.pdf
    • http://7gusevshop.space/xonegesekazilexova4f4xx.pdf
    • https://static.s123-cdn-static.com/uploads/4417834/normal_600533d984f31.pdf
    • https://static.s123-cdn-static.com/uploads/4390069/normal_5fede95518804.pdf
    • https://cdn-cms.f-static.net/uploads/4382948/normal_600ffc6f7f95c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://natizuf.onlinewebshop.net/1099315988.pdf
    • https://s3.amazonaws.com/nisoxow/samsung_55_inch_premium_uhd_tv_-_series_8.pdf
    • http://woxikajir.myartsonline.com/tbm_tunnel_boring_machine.pdf
    • http://rodexiguv.onlinewebshop.net/attachment_theory_styles.pdf
    • https://s3.amazonaws.com/kobivimelelo/2007_chevy_trailblazer_ss_service_stabilitrak.pdf
    • https://s3.amazonaws.com/nefagolom/78684067303.pdf
    • https://0ef2f354-78a3-4528-990c-72f69c86fc6a.filesusr.com/ugd/6a0da6_8e97d6a735ae423db4d0f7efcdbdd68b.pdf?index=true
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_b2ab082d9b184fdb8661942f606efa11.pdf?index=true
    • http://sisufovofow.atwebpages.com/pixix.pdf
    • https://s3.amazonaws.com/lizuseguwix/dieta_cetogenica_recetas_gratis.pdf
    • https://2daccc73-8708-4113-a26a-4f38906335d9.filesusr.com/ugd/f65175_38c60b1e77dc46278f1620da9f706630.pdf?index=true
    • https://s3.amazonaws.com/mexesazaxasa/25147983860.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efc1.bin
bcbb9c1e13ba4fae966e683c61deff58393dfb49258687edc10f1e38e5960cc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC1 5312 bytes
font_01_sfnt_off000101ae.bin
c29acd2229f6607e018a697b8a85b72b3129340e82f40b7d7810d7e257b1f6fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101AE 11196 bytes
font_02_sfnt_off00012803.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12803 4324 bytes

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