Malicious PDF — malware analysis report

Static analysis result for SHA-256 0924759197090bbb…

MALICIOUS

PDF

78.4 KB Created: 2021-04-04 06:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 30d174da54dc758d499298dd36066cb3 SHA-1: efe9c716d0edbc772d0c569336a009868e2e0af2 SHA-256: 0924759197090bbb3214792ecaa4af61a0008b656103bca177852c6da92e5342
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains an embedded URI pointing to 'jacksth.ru', which is likely a malicious or phishing domain. The document body, though heavily obfuscated, suggests a lure related to a printer manual to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/strik?utm_term=hp+officejet+5745+e-all-in-one+printer+manual PDF link annotation
    • http://begemotiks.fun/239461838460e4i2.pdfIn PDF document text
    • http://damvglaz0.xyz/kotozadinanebeodg09.pdfIn PDF document text
    • http://onlineeshop24.xyz/hockey_score_sheet_sticker_template9t1oz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d972719f-3004-40cb-a9d1-fb575b1b4ce4/tadizodufiruketafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e1d4ff5-23af-4776-82b4-600d15724887/agile_project_management_training_near_me.pdfIn PDF document text
    • http://dasabenanej.epizy.com/wapufigalifuzividi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dcaac0f-57cc-4d8e-a5ce-5cf321a93b48/puwis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d202c09f-024d-4440-a300-1be4bc2513f0/starbucks_cold_cups_personalized.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d50eccd-177f-4bb6-9728-f7bdab2d6cad/35765410153.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/the_empty_pot_storyline_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/624df3e3-4c3f-479d-94c6-81d99d430886/javorokumogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1f96aee-8c98-493d-92d0-5b14b3fcd7b0/24353979552.pdfIn PDF document text
    • http://pogugule.epizy.com/vijepazuranakuwokan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5abd51ea-cdb6-4511-881a-1f7bab173c40/purizoraga.pdfIn PDF document text
    • http://memajale.epizy.com/numerical_aptitude_test_questions_and_answers.pdfIn PDF document text
    • http://zijijexumejege.rf.gd/autodesk_maya_2020_tutorials_for_beginners.pdfIn PDF document text
    • http://xuzinom.epizy.com/proyecto_ley_presupuesto_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/gowirotujetuxizikuzerexim.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/sekegaxelumuzamoseduzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f3a235-d7a1-4b03-8b68-b6c57845c74b/pogowetuxafetujawufasi.pdfIn PDF document text
    • http://bevupun.epizy.com/lucasfilm_after_effects_template.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E0 5344 bytes
SHA-256: 63d26aa7e445f5c67bf6d431105ede0d72408cb58f2e57e71dcb480d826eea13
font_01_sfnt_off0001061f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061F 11084 bytes
SHA-256: 73a86c4f045c8525a4290293c4bbfb82ac60bd822494998a27af35779c408319

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