Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb537e50c329a9d0…

MALICIOUS

PDF

145.8 KB Created: 2021-03-18 14:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1070acb2b947ca11b0c2e4fa011a32d8 SHA-1: d49397669538b59fdc2aab01636298570d96a8e8 SHA-256: cb537e50c329a9d0abeea8e913bf48b245d47d67587d492b53b7c97c1470acd7
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. The embedded URL points to a domain associated with malicious activity, and the document body, though heavily obfuscated, suggests a lure related to printer drivers. The presence of an external URI indicates an attempt to download additional content or redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://ponafet.ru/strik?utm_term=hp+laserjet+3055+scanner+pdf
    • https://cdn.sqhk.co/tagubutapa/fijjcjg/stalker_mobile_game.pdf
    • https://cdn.sqhk.co/xazakamugi/fIii8hf/80596533855.pdf
    • https://static.s123-cdn-static.com/uploads/4452398/normal_6007451f54d2f.pdf
    • https://cdn-cms.f-static.net/uploads/4382430/normal_601b8320401bf.pdf
    • https://cdn.sqhk.co/losopodelim/jbhcRid/neberusilopovinu.pdf
    • http://habirovradik.ru/31351522369x7zr.pdf
    • https://cdn-cms.f-static.net/uploads/4421207/normal_5fdab3f7a4e02.pdf
    • https://cdn-cms.f-static.net/uploads/4422658/normal_5fe66bb945c17.pdf
    • http://dfahsdfgjsfg.online/4295041828789ytr.pdf
    • https://static.s123-cdn-static.com/uploads/4480750/normal_5fc88fabc1dcc.pdf
    • https://static.s123-cdn-static.com/uploads/4464077/normal_5fe03b0b05ff7.pdf
    • https://cdn.sqhk.co/gijesali/hQgiOja/lonuzabenabisixumevot.pdf
    • https://cdn-cms.f-static.net/uploads/4486051/normal_604a74e2ce1c8.pdf
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5ff676081d849.pdf
    • https://cdn.sqhk.co/sedazozesufu/hg5gdhb/hunger_games_board_game_project.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tifuwuw/begopekisapigovexogub.pdf
    • https://s3.amazonaws.com/bidurudilidujug/walimilabolaruxe.pdf
    • https://uploads.strikinglycdn.com/files/a567513b-b523-4acd-84e7-189a32113659/what_are_the_3_goals_of_social_work.pdf
    • https://s3.amazonaws.com/vavapekadoliti/59655486415.pdf
    • https://uploads.strikinglycdn.com/files/e981c73d-3e01-4ad6-9e94-6715b1280da7/lofipiporopadajamitikig.pdf
    • https://s3.amazonaws.com/tejuvonixag/mefukumezojod.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2df.bin
b46262b9a0341a755c2b1cdfa47e36621bea3814e8e66da2beee5bd3fa260b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DF 77532 bytes
font_01_sfnt_off0001da6b.bin
864f4b22f01dae575054622c95ec81d81f176b76ee27b58790ac45f61b6e4c17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA6B 5248 bytes
font_02_sfnt_off0001ec4b.bin
a9a1f931787ed1d9ef5928ec56f176ba43edab2ce9afb010449a2a5ac5bccb36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EC4B 11396 bytes
font_03_sfnt_off0002135a.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2135A 16204 bytes
font_04_sfnt_off00022888.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22888 4324 bytes

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