Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49e2c81e57ca5ad…

MALICIOUS

PDF

65.2 KB Created: 2021-02-14 21:54:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1ef2923f49da192a7805e7b020e8d911 SHA-1: edc4bb684647888d5683d03fe950312186f38152 SHA-256: d49e2c81e57ca5ad84b2a2786930099862bb094b33c38b4c72a08b3561eaaddd
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=rainbow+e+series+service+manual PDF link annotation
    • https://zurokexotuv.weebly.com/uploads/1/3/1/3/131384071/salobox.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/vjcNThg/hovercraft_battle_arena_hack_apk.pdfIn PDF document text
    • https://tefuvaxijo.weebly.com/uploads/1/3/0/7/130739162/rurekudakepivovexira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409609/normal_6020d07f002a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413223/normal_5fcece5b2775f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383470/normal_5fd61e40714f0.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/ohfciaa/dead_cells_ram_rune_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/bCzhggi/current_face_mask_requirements_in_texas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460966/normal_6004b8ce5e99e.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugituxi/gd4heP5/88973340864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495413/normal_5fca83426f632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_6010648d804bf.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/ejdTjdE/nabusapujororunogulabos.pdfIn PDF document text
    • https://fopezifu.weebly.com/uploads/1/3/4/7/134717551/bf724.pdfIn PDF document text
    • https://cdn.sqhk.co/julubesaf/gRjjIAM/generalized_anxiety_disorder_treatment_algorithm.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/roware/fentress_county_general_sessions_court_report.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/25715093990.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/malaguena_clarinet_sheet_music.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_off0000c2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DA 5244 bytes
SHA-256: fc6f1711e970c293fca8f5653c710a95d61813aff45171ddb107cb0ff11d89f9
font_01_sfnt_off0000d4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B3 10100 bytes
SHA-256: 321a42380ec00e07720d898580c6a5bb484a3da7baea95117789ba718d2b7a67

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