Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19e041faee62f6a…

MALICIOUS

PDF

67.2 KB Created: 2020-10-14 22:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c6e2611b1e6833faf2b0e3c43976dd24 SHA-1: 340ebf302e461f2fe98b5fc92402fd23dc1751c2 SHA-256: d19e041faee62f6a8877dcb6128a7c7bfe75ccb3f1af470c7c704e6612a78803
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/123?keyword=strategic+performance+management+book+pdf In PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/kogog.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/3873212.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/limekawavuv-fukif.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/nalamexu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/palaj_xofepevez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87059cbff7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f8706185df41.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/pisimogateku.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/jatelu-zukolugaw.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/8016999.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/1/0502/2675/7786/files/vegigugudukobariwapisilal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2484/2391/files/jifuwulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0471/0649/0518/files/70832907972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0502/0830/files/pursue_all_i_need_is_you_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/skyline_drive_hikes_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7491/2410/files/tujav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/lol_hair_goals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/138635cf-53f3-494e-a43e-6f060cb5849e/75863540092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/606919ae-c4d5-426b-a358-0e165170ed0c/lomol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/210b020d-d6b2-4fee-b0a9-f538b9485c82/71268458282.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_off0000c83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83B 5572 bytes
SHA-256: d157d8380095828a0530e7572493fc2aa1a638ced60969fdc52cd94968450bdc
font_01_sfnt_off0000db10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB10 10536 bytes
SHA-256: 248e2fd157cf1f454207ec7df4407f11cc35d9d5c07205265c4ecd772536d5d5

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