Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddfc1880c70a879c…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 20:37:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 55a50201e6c9351d2e252b9e2a2790b9 SHA-1: d2f5e5ae5fd09c860a9a5f04c41d2c08fa604250 SHA-256: ddfc1880c70a879c2e94a4dce5f6d4f81bf25a7b22898021c4954c529272dd99
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=ind560+terminal+installation+manual+and+technical+manual In PDF document text
    • http://alcexpress1.xyz/scrapbookpal._com_coupon_codenlyzd.pdfIn PDF document text
    • https://kejarokelevu.weebly.com/uploads/1/3/5/2/135297316/96d1ae1.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/60945372996.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/jgjdRia/disney_subscription_support.pdfIn PDF document text
    • https://kufobuzu.weebly.com/uploads/1/3/5/3/135330794/wezopumuf.pdfIn PDF document text
    • https://cdn.sqhk.co/zakolemafemo/iJvoibI/64138747926.pdfIn PDF document text
    • http://zanartcc.net/kezudevisavivewileruxeml3t1y.pdfIn PDF document text
    • http://megantv.site/how_to_crochet_a_bucket_hat46eq6.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/hhjhxxf/popping_bubbles_game.pdfIn PDF document text
    • https://cdn.sqhk.co/gulofiji/aOsheps/logo_game_tv_and_movies.pdfIn PDF document text
    • http://interior.estate/character_traits_graphic_organizer_3rd_gradescpz6.pdfIn PDF document text
    • http://mirijesuwakug.sportsontheweb.net/los_beneficios_de_la_cebada_perlada.pdfIn PDF document text
    • http://soxexuv.iblogger.org/78019429879.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/labitajaxatufib/laws_of_logarithms_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/cuales_son_los_primeros_sintomas_de_la_prstata.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/the_handbook_of_bilingualism_and_multilingualism.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/tajejuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/355_cdta_bus_schedule.pdfIn PDF document text
    • http://gizenelik.rf.gd/automower_310_manual.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_off0000db35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB35 5536 bytes
SHA-256: 1fd472c2421996eae45cc6496a716e814cd8511f46f88e08d35530e50ff4c173
font_01_sfnt_off0000edda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDA 9652 bytes
SHA-256: 6ea8bd02f5aa243508821bbd12e6e9495d2365b35320ac2f97dbd313a568f6c8

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