Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d1f1b76bebb9604…

MALICIOUS

PDF

75.1 KB Created: 2021-02-14 02:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7c54db4f9877641721cfce3098deae9f SHA-1: 9f85b80e447f1c2d60511b66168fd00aabbbd14e SHA-256: 5d1f1b76bebb9604bf24463ec6966e8fceef9f3ec50e7751d1c6f1b88349446d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/mepulibuxejoxa_xalike_leviruperofeder_namit.pdf.
  • 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/wix?keyword=where+to+buy+zetaclear+in+south+africa In PDF document text
    • http://lnstagaram-verifiedbadges-from.com/66913709618zf0nx.pdfIn PDF document text
    • https://tidukefawa.weebly.com/uploads/1/3/4/8/134851120/mepulibuxejoxa_xalike_leviruperofeder_namit.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/nosusabusanowuxanapij1bqu1.pdfIn PDF document text
    • http://copyrighthelpcentral.com/segusgulf4.pdfIn PDF document text
    • http://sodahub.pro/anastasia_once_upon_a_december_piano_sheet_music6d7qi.pdfIn PDF document text
    • https://volinamonapefez.weebly.com/uploads/1/3/4/4/134494747/70763.pdfIn PDF document text
    • https://tadinitalu.weebly.com/uploads/1/3/4/7/134744808/jafizazevovewo-felisom-lebezofu-rutuvili.pdfIn PDF document text
    • http://awpmode.com/929164491054in9x.pdfIn PDF document text
    • http://lnstagramsupportlives.com/tusea_la_bebelusi_de_2_saptamaniou5g1.pdfIn PDF document text
    • https://gozaxuvo.weebly.com/uploads/1/3/4/6/134612917/89f17ca2a13.pdfIn PDF document text
    • http://it50save.info/xagaxusiluzejuvobebetawqdh2.pdfIn PDF document text
    • https://cdn.sqhk.co/wolitobutak/bjjWy6V/26490405290.pdfIn PDF document text
    • http://rubeatyshop.xyz/ditofakiwirilezouvmk2.pdfIn PDF document text
    • https://cdn.sqhk.co/rokijatu/rP9geGA/91249008071.pdfIn PDF document text
    • https://cdn.sqhk.co/votijavos/hahbidp/maze_kingston_grey.pdfIn PDF document text
    • https://cdn.sqhk.co/gedadixugud/egcjajh/lowes_craftsman_tool_set_sale.pdfIn PDF document text
    • https://vipefujalebir.weebly.com/uploads/1/3/4/7/134744486/72ed7.pdfIn PDF document text
    • http://susurrus.space/chamonix_tourist_guidedtnrh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE947 5276 bytes
SHA-256: aa51d33338a8ff4f46e4566c0ff08b21b18dbefce0e3c820c792b5b8f776d05e
font_01_sfnt_off0000fb50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB50 10468 bytes
SHA-256: a44930b9fdf6115118471ff938898e092f70fbbef5594000d1860713175a8f03