Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee32d4e8c192940…

MALICIOUS

PDF

73.2 KB Created: 2021-06-14 15:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 630574f224ca1800d68f3a5e489eecbe SHA-1: 7da60e8143636b8722c4dac1cb3233b83ffec22a SHA-256: 6ee32d4e8c19294095f6dc9626d28ef7433ebca312269eeaa21475faaef1e95d
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'https://infrive.ru/pbw?utm_term=ppsspp+games+iso+2020', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'ppsspp games iso 2020', suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://infrive.ru/pbw?utm_term=ppsspp+games+iso+2020
    • https://cdn-cms.f-static.net/uploads/4382770/normal_6029ccf7391e4.pdf
    • https://cdn-cms.f-static.net/uploads/4384817/normal_602ef99b1a375.pdf
    • https://static.s123-cdn-static.com/uploads/4493602/normal_5fce8ede07e0f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/32654a8a-49ad-4649-990b-cdb235c29c74/5_uses_of_micrometer_screw_gauge.pdf
    • http://vobaranizume.pbworks.com/w/file/fetch/145071531/nalutafapobona.pdf
    • https://uploads.strikinglycdn.com/files/7aebdad8-def4-47f3-8ff4-f43da98cc102/10905975211.pdf
    • https://uploads.strikinglycdn.com/files/3fe02260-500a-452c-b182-4a9fd13e56e9/vufefexewaso.pdf
    • http://vazesuna.pbworks.com/f/vixugexumubonakupotefado.pdf
    • https://uploads.strikinglycdn.com/files/c0f226ac-2d0f-41c0-950a-c38e4d4e62b8/nuwaxalalimozi.pdf
    • https://uploads.strikinglycdn.com/files/36e81046-f82f-4e2d-a1db-fef73bc67285/24287402144.pdf
    • http://latijanitus.pbworks.com/f/surah_vakya.pdf
    • https://uploads.strikinglycdn.com/files/312042c8-8203-4032-958d-7f5eb2f588a6/febilojoxugamoditenol.pdf
    • https://uploads.strikinglycdn.com/files/88fa9a4b-4ad7-41e8-a487-04e2bd3ed16a/what_is_a_proofreading_business.pdf
    • https://uploads.strikinglycdn.com/files/3ec4d195-a547-4b7b-b21d-4229733e29a0/40070641189.pdf
    • https://uploads.strikinglycdn.com/files/d6593f60-c311-465e-a236-d78bcd087e22/88510295432.pdf
    • http://pitavumiza.pbworks.com/f/mp3_to_cda.pdf
    • https://uploads.strikinglycdn.com/files/fbcd08b1-ea4f-4c94-b4ed-9cfd8bbecccc/elaborate_entrance_of_chad_deity.pdf
    • https://uploads.strikinglycdn.com/files/4c3d531c-a167-470e-b3ff-a5be294aa6f8/value_of_digimon_cards.pdf
    • http://vowujepojez.pbworks.com/w/file/fetch/144428175/satesijijubugilato.pdf
    • https://uploads.strikinglycdn.com/files/468b085d-03a3-4997-bacb-0adce50b0b64/peavey_16fx_usb_recording.pdf
    • http://rukutuxeriro.pbworks.com/f/sogivixilerabi.pdf
    • http://winubuton.pbworks.com/w/file/fetch/145197105/mumasifegub.pdf
    • http://ronefete.pbworks.com/w/file/fetch/145255413/jai_pubg_ji.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_off0000dc13.bin
cad2020aa417b239b3e3437e1cc9f75318ba654b2f0de6fcd37b380cfbb4621c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC13 5284 bytes
font_01_sfnt_off0000edfb.bin
803f61075bdf59f4c4539bf6d60e893eb2522688d85a6e446a13445867cb4a7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFB 11780 bytes

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