Malicious PDF — malware analysis report

Static analysis result for SHA-256 244593756425d605…

MALICIOUS

PDF

72.7 KB Created: 2021-02-19 01:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0f6115c067c5d3e443731fb0ec62dd64 SHA-1: f8605ad634d77e0f99e6ae5039e74996706dfd68 SHA-256: 244593756425d605a55090dc757b57ff8304291b12759592ec4b768d3e211410
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=artificer+dnd+5e+guide PDF link annotation
    • https://gisudilepa.weebly.com/uploads/1/3/5/3/135346020/2392977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_602eab83646af.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/jgRggNC/nails_2000_hudson_nh.pdfIn PDF document text
    • http://ogranicbio.fun/how_to_increase_image_rating_in_bsgslvcu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416506/normal_6018dad708b8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490752/normal_5fcba9c2bb266.pdfIn PDF document text
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/7713979.pdfIn PDF document text
    • https://lunidopufakim.weebly.com/uploads/1/3/4/4/134482460/1869722.pdfIn PDF document text
    • https://waxebusesu.weebly.com/uploads/1/3/4/7/134770319/1275619.pdfIn PDF document text
    • https://xapefawisago.weebly.com/uploads/1/3/4/7/134771693/4763442.pdfIn PDF document text
    • https://dovavifedudefew.weebly.com/uploads/1/3/2/7/132710721/migilopesa_nesebixa.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/6GdieuE/90748808191.pdfIn PDF document text
    • https://natutiwuv.weebly.com/uploads/1/3/6/0/136019317/c1e8d511e.pdfIn PDF document text
    • https://cdn.sqhk.co/korokotuduki/iZbgfjb/dope_live_wallpaper_hd_android_phone.pdfIn PDF document text
    • http://praktika-ingenieur.com/barewejufijube1tc5.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_off0000e379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE379 4884 bytes
SHA-256: bb8b91bd49e2632d51a90ff069e6fb80b40a48ca94360218612684edc2195106
font_01_sfnt_off0000f42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42E 10000 bytes
SHA-256: 372635949f18b97a53fa598185d8751ae24e2a4190b94a1e1a1f8d646f97aebf