Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce689813db991f64…

MALICIOUS

PDF

45.8 KB Created: 2020-10-15 15:58:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 21c25bf4e0ab46b499501d402a80cbae SHA-1: 70c3fb45286d6978cf302e43e7e74f7b2b6888b5 SHA-256: ce689813db991f64e1758c49f8150c95285beb736dde223f103724777ddd1858
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://gettraff.ru/pify?keyword=face+morphing+apps+for+android In PDF document text
    • https://site-1042360.mozfiles.com/files/1042360/motorsport_manager_pc_game_guide.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/25ed1ebb961c.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/difoduwebuvim.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/1874062.pdfIn PDF document text
    • https://site-1043287.mozfiles.com/files/1043287/didenitilorunaniru.pdfIn PDF document text
    • https://site-1044416.mozfiles.com/files/1044416/zizidunonoved.pdfIn PDF document text
    • https://site-1041766.mozfiles.com/files/1041766/zixabadejawito.pdfIn PDF document text
    • https://site-1040140.mozfiles.com/files/1040140/mituresan.pdfIn PDF document text
    • https://site-1036839.mozfiles.com/files/1036839/nodopamenifumizukugob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3805/5841/files/plotter_canon_ipf670_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6176/2455/files/fipoxulumapukaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9326/9923/files/30723705641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6340/0861/files/jamimavevusinajitesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6308/5722/files/comprehending_anatomy_and_physiology_terminology_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/noraduvojavenekevabefiwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8673/6286/files/red_hat_linux_certification_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4773/1359/files/xbox_360_emulator_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28516a7b-a025-4008-8a48-49f1a526729d/vafeberubaxobesuvov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae81868c-0556-42bf-9ed3-6183bbfaad99/supugip.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_off000075c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C8 5492 bytes
SHA-256: d09be2b1cd9d8513453aec9fb35accf493773b1f335a74856e040b2fa20e0bde
font_01_sfnt_off0000884e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 9916 bytes
SHA-256: 22fa6b2ea39f90b74c72d27d6643494b6647a078bb8a4bd7bb3035d2a4279515