Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ab087251724aae…

MALICIOUS

PDF

77.8 KB Created: 2021-02-25 15:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 86ffa1b829d2d078ace11afd49b12276 SHA-1: 664a1531990b9c3b7682dc7cccb3396dab1b8903 SHA-256: 08ab087251724aae28a2c79c4d3e648b2fe9bae7cdf7d7c3c910049709df284e
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://crophysi.ru/award?keyword=how+much+does+kelly+services+take+out+of+paycheck In PDF document text
    • https://static.s123-cdn-static.com/uploads/4405930/normal_6002eded33e04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412763/normal_601bb3f90fd55.pdfIn PDF document text
    • http://nakrutkavk.site/60_seconds_atomic_adventure_apk_full_version0v3qp.pdfIn PDF document text
    • https://dufofisejufosu.weebly.com/uploads/1/3/4/8/134875198/bovezitugi_zikorimuriwo_xumezuv.pdfIn PDF document text
    • https://cdn.sqhk.co/pifixijowoka/hdhfOhb/pujojufewamasexos.pdfIn PDF document text
    • https://wojawodexof.weebly.com/uploads/1/3/4/6/134673733/8850477.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413362/normal_6007cc675d305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375889/normal_5feb6a058eb66.pdfIn PDF document text
    • http://helpcopyright-service.com/togegoxotonir849pa.pdfIn PDF document text
    • https://paxexituva.weebly.com/uploads/1/3/5/3/135332474/kixoruzifebav-zarefunobozi-wapad-betigexajuseso.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/elements_of_musical_theatre.pdfIn PDF document text
    • http://itactical.xyz/blind_date_with_a_book_descriptionsrizwg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kavibajegis.onlinewebshop.net/aasl_standards_framework.pdfIn PDF document text
    • http://jijutapomu.rf.gd/switch_games_2020_multiplayer.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/zisop.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_off0000f2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C2 5676 bytes
SHA-256: 5f904f70540f6a85ea3400a1842f68ce373816b17c25b0ddc4ec97713760071d
font_01_sfnt_off00010603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10603 10660 bytes
SHA-256: ebe76c702435250b01b0b58406b35e2a9a361bab8aeb6e4df8805c89dc659cff