Malicious PDF — malware analysis report

Static analysis result for SHA-256 efcaa252a53fd0f2…

MALICIOUS

PDF

88.9 KB Created: 2021-03-23 06:43:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7c076d5cf795a87fa1a3d32bf19a6473 SHA-1: 436d8cef19ea6788ebe4822eff7d3181faa10761 SHA-256: efcaa252a53fd0f2ea395776c3ae70dcebc7061c1c6b79bc3c8349a02c695e31
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'botokaw.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to persuasion, further supporting a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/strik?utm_term=what+are+the+two+routes+to+persuasion PDF link annotation
    • http://canonsburglake.org/what_does_an_international_lawyer_docwk4k.pdfIn PDF document text
    • http://slmit.fun/pokemon_go_shiny_list_2020_julyvww7j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447263/normal_603803b614cfd.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/dwiiu7d/xprevious_not_working_gamemaker.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/introduction_to_machine_learning_cmu-10701s5gfg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403417/normal_5ff8ff912a361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413862/normal_602a233accc9c.pdfIn PDF document text
    • http://noncomform.space/dulozegutijiworoxejenudisdg6l1.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/vjfiaiH/5085006738.pdfIn PDF document text
    • http://fenellalucynelle.info/59191893934uxnjh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414682/normal_5ffb14948a2f5.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/sihhbjj/strike_2_goal_fantasy_soccer_league_2019-_20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/jekinoxosisajataxugejajeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3293bb1a-3d0c-492a-8c73-cb9e9185ce20/i_robot_book_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/79937032356.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/story_learn_english.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/37624015385.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/gupinixurutopufujowe.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/boyner_vans_old_skool_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/john_wick_fight_scenes.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/goal_setting_sheets_for_high_school_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd95bcd0-602c-4951-8b23-a1d9cea93267/23086980617.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4913bd3f-e53e-4163-b88e-aefda18a2a0a/19427722440.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C46 4980 bytes
SHA-256: 854fdfdf25a15a4e9603036f05a1c86e863d55669bbf9db2517990721ecd8e48
font_01_sfnt_off00011d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D49 10544 bytes
SHA-256: 953f65927a86f9a00cb63fbd4fb342049a2a614ab518b48bbb91f25709366803
font_02_sfnt_off00014168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14168 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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