Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef80b919e68e44c…

MALICIOUS

PDF

68.4 KB Created: 2021-02-24 01:10:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 42a66dc3c5d1248eb229e817fa2a1f4d SHA-1: eeb1b2c47173bea9fbaf5258cc3d137219eb3236 SHA-256: 6ef80b919e68e44c7d9a796ece2798e42a4b08aece936b6ac1147daf29936255
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=guess+up+emoji+answers+level+277 In PDF document text
    • https://fotiterik.weebly.com/uploads/1/3/5/3/135328456/tinibad.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/OGjdgfs/26205220925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494888/normal_601516ff5c865.pdfIn PDF document text
    • http://tesocoin.online/62759277478qmr35.pdfIn PDF document text
    • http://devgame.design/penujazukininanububemena40xh3.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/MyhiZws/road_draw_bike_riders_nsw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527357/normal_5ff64e0f221eb.pdfIn PDF document text
    • https://rumejujosuzix.weebly.com/uploads/1/3/1/1/131164455/zovofijolixax_purijibi_gaxixazodi.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/dalulanaso-nasixunukat-rexozebedular-vemamekudopava.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/hhiimgf/national_geographic_magazine_subscription_cancel.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/bezorito/fbi_id_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/braun_series_9_manual_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/soxasonajunevubaduvupusu.pdfIn PDF document text
    • http://bokakemipik.epizy.com/best_small_cars_2018_consumer_reports.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_off0000ceec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEC 5436 bytes
SHA-256: afe7f491f325ccd03cdaa41b3a7ab35bd5319398fea64d23083eca5a50147349
font_01_sfnt_off0000e176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE176 10328 bytes
SHA-256: 7fede9eec7ea5adda9134f76737892e1332bfc4d7f7b4faa70660336b3c0c892