Malicious PDF — malware analysis report

Static analysis result for SHA-256 361c9f1fcaf1e3d8…

MALICIOUS

PDF

78.8 KB Created: 2021-03-28 08:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d24c8a6b8e94822bcca3ded2e65fd276 SHA-1: b2130fbe2b032db267c364dfd5dc99ab7382ca32 SHA-256: 361c9f1fcaf1e3d8b8ff927b1918fe7f196e49fd21293baac6b15c7f7d9af7cd
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'lozipotod.ru', which is likely the malicious destination. The document body, though heavily obfuscated, suggests a lure related to 'minecraft cave noises', indicating a social engineering attempt to drive traffic to the malicious URL.

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://lozipotod.ru/wix?keyword=minecraft+cave+noises
    • https://cdn-cms.f-static.net/uploads/4467571/normal_6025845f4055a.pdf
    • https://static.s123-cdn-static.com/uploads/4391308/normal_5ff965b357665.pdf
    • https://cdn-cms.f-static.net/uploads/4450502/normal_6033d119233c6.pdf
    • http://fanisore.sportsontheweb.net/70882533847.pdf
    • http://bexemusu.mypressonline.com/les_boloss_des_belles_lettres.pdf
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5fe52c49e4b40.pdf
    • https://static.s123-cdn-static.com/uploads/4410983/normal_5fdc98433ca3f.pdf
    • https://cdn-cms.f-static.net/uploads/4457272/normal_602c232c0663d.pdf
    • https://cdn-cms.f-static.net/uploads/4417137/normal_6025a0ec9fabd.pdf
    • http://puvinizozibejir.mygamesonline.org/5391673859.pdf
    • https://cdn-cms.f-static.net/uploads/4482426/normal_60567b7e99741.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/51c78b88-0a22-4b93-a21e-50948c138375/american_short_fiction_contest_2019.pdf
    • https://uploads.strikinglycdn.com/files/d4a515aa-523b-489e-9c4b-5b49aabe2719/how_to_play_midi_keyboard_without_computer.pdf
    • https://uploads.strikinglycdn.com/files/b4820c8d-139c-4be7-bee7-2e63fcd6fafc/hunter_x_core_sprinkler_timer_instructions.pdf
    • https://uploads.strikinglycdn.com/files/9bcaabca-112f-4ba5-9684-67092799c77f/24063416414.pdf
    • https://uploads.strikinglycdn.com/files/2b2e73e6-3f32-42e3-8fdd-11987a0db029/casio_tough_solar_illuminator_watch_manual.pdf
    • https://uploads.strikinglycdn.com/files/5ae35386-9698-4c95-bfa9-caf7805c9533/4785781851.pdf
    • https://uploads.strikinglycdn.com/files/0da59a82-f340-4085-9885-5985db9b0a22/do_xbox_360_turtle_beaches_work_on_xbox_one.pdf
    • https://uploads.strikinglycdn.com/files/e125b828-d85b-454a-adca-42a437ec3e47/zelavowaxofumubofob.pdf
    • https://uploads.strikinglycdn.com/files/d5c58ab1-938d-4735-a2b7-145e361f7f2e/46314981743.pdf
    • https://uploads.strikinglycdn.com/files/dace82d4-b1e3-4f02-9713-808f341ccb09/vigadulelovamusadunoko.pdf
    • https://uploads.strikinglycdn.com/files/745ba231-81f6-4cd7-af1f-c08b8ba4ff64/sony_av_receiver_str-dh820_manual.pdf
    • https://uploads.strikinglycdn.com/files/b235611a-a845-4fa6-a3f7-0010ba37d411/93341218068.pdf
    • https://uploads.strikinglycdn.com/files/567f709f-7b25-4b78-b2f5-ea97b829c547/wasivujirofupetudiz.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_off0000f5fc.bin
8922ab5f9ea8eb65ecf2f3c1f0191081c9d70f773a8f9d92312a25850b614d5a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FC 4908 bytes
font_01_sfnt_off000106d5.bin
97c60b8c704b96ecb8da66da45860a0bbfbfe78414a96e2179352b325c84521f
pdf-font-stream PDF embedded font (sfnt) at offset 0x106D5 11396 bytes