Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf382477989af0bb…

MALICIOUS

PDF

67.7 KB Created: 2021-02-25 09:00:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 55f3307651954fc8a75c8500c17b0e3a SHA-1: cb11b3b2e3213df078138f214c5f21297bbc9422 SHA-256: cf382477989af0bb01d1db2f08bfb7afca0db57e2358a76a72f134bba85aa957
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=vectors+homework+worksheet+answers PDF link annotation
    • https://nikubasixuza.weebly.com/uploads/1/3/0/7/130738960/seputufusamob_kawus.pdfIn PDF document text
    • https://fumabufoduf.weebly.com/uploads/1/3/5/3/135313851/489a1a24.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/lunulanidodifogobeletisif.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/jWjggcc/learnzillion_guidebooks_2._0.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/gift_of_the_magi_questions_multiple_choice.pdfIn PDF document text
    • http://zatoxuvisovapuf.sportsontheweb.net/church_of_the_flying_spaghetti_monster_bible.pdfIn PDF document text
    • https://cdn.sqhk.co/mirofifuba/jgggzkS/viwoxopobugolafapesopunin.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/57c37d.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/jipizuneposoxikarufoven.pdfIn PDF document text
    • https://bagesasadav.weebly.com/uploads/1/3/4/3/134383367/xuwomufus.pdfIn PDF document text
    • https://niregesop.weebly.com/uploads/1/3/0/7/130776037/batovasazevu.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/hiGh4ag/5774413083.pdfIn PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/popafis-kuxazun-kawatozugub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450046/normal_5ff8b5dbf29af.pdfIn PDF document text
    • https://filewefoxu.weebly.com/uploads/1/3/4/7/134750201/13d48c2e.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/mogedozara/airless_paint_sprayer_tip_size_guide.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/how_to_setup_a_xfinity_remote_to_the_cable_box.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/aadhar_card_update_app.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/tatatagubovowujizob.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/angry_birds_2_game_hack.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_off0000cd34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD34 5128 bytes
SHA-256: b8ea6a1a340e95f867f2a5a7c7db0a361bc73733e3b5e0b25369e79ce62a0ea6
font_01_sfnt_off0000de90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE90 10128 bytes
SHA-256: bed81de517399e0f665990048a7784482acdc5aeed28ddecc35c596acc86db51

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