Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d8da49f7260a717…

MALICIOUS

PDF

75.2 KB Created: 2021-02-13 18:06:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 296a1894eab3d4ea203194e09bd5c053 SHA-1: 489ea6cb6f29e4036c7cdde486ee71d9c42f09a7 SHA-256: 8d8da49f7260a7172e0c44c2529f617487fc211279a30aff9c5ec8ec633ca8c2
186 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=simple+interest+worksheets+tes PDF link annotation
    • https://vepufekuso.weebly.com/uploads/1/3/0/7/130775624/5271020.pdfIn PDF document text
    • http://momentikshop.space/mortal_kombat_9_download_pc_utorrent3s4az.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/RcLighf/sword_mobile_wallpaper_download.pdfIn PDF document text
    • https://lajexupizad.weebly.com/uploads/1/3/0/7/130775806/9255266.pdfIn PDF document text
    • http://cookwellbakewell.com/anglo_link_freel2bcb.pdfIn PDF document text
    • https://vuderuxedus.weebly.com/uploads/1/3/4/6/134692959/lumizezig.pdfIn PDF document text
    • http://lufatomitonad.22web.org/zugujozuzif.pdfIn PDF document text
    • https://ripodomix.weebly.com/uploads/1/3/0/7/130775876/nexidofukonamiko.pdfIn PDF document text
    • http://douchelabs.xyz/65153735670i3ti2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375698/normal_5ff2677b4a796.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/vekokixu.pdfIn PDF document text
    • https://zegepefuloruwan.weebly.com/uploads/1/3/4/0/134012378/9970575.pdfIn PDF document text
    • https://pesakezered.weebly.com/uploads/1/3/4/7/134729162/fesosawitiwowuxusuje.pdfIn PDF document text
    • http://egosikenclub.com/714604635tgs41.pdfIn PDF document text
    • https://cdn.sqhk.co/remavaveso/ijgcXLb/sixepalodikefev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tirejazanapo.epizy.com/khan_academy_science_answers.pdfIn PDF document text
    • http://nufufud.epizy.com/autodesk_student_for_mac.pdfIn PDF document text
    • http://jevodowe.rf.gd/basic_analytical_techniques.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_off0000eb60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB60 5108 bytes
SHA-256: db9be356ad53c53cc006c0f42dfbf972162fd76e8bbd8e86e440fc9449d2202e
font_01_sfnt_off0000fca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA5 10396 bytes
SHA-256: 2c173aa79ce4afcfaabca25a2b872052fe36d7f2f50352519bca19dbc6835c60

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