Malicious PDF — malware analysis report

Static analysis result for SHA-256 634f009e12f5a741…

MALICIOUS

PDF

43.9 KB Created: 2020-10-25 12:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8286d96766e9eb3d3c89a19e3f8212c1 SHA-1: d7468926a31fc1aeed2101e1edcf82217b6e327f SHA-256: 634f009e12f5a74143efe5fc14230a873d7c6253d9f539706ed9d06dcf018100
184 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=hamlet%2527+s+fifth+soliloquy In PDF document text
    • https://sirawomaperuli.weebly.com/uploads/1/3/1/3/131398091/wovojojovisusukit.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4625589.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/figarimixedavig.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/gowijipomunolu_lirogub_loletakimup_rozugofekowe.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/jofutonojozozod_mofoseke.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/2706239.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/maraponirijir.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/895b91c8c2ef.pdfIn PDF document text
    • https://fizolapojola.weebly.com/uploads/1/3/1/3/131383549/tiwawewekenirogufa.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/7d574c.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/sirorepiwaxise_vosupemeras.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a14.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a14.bin)
    • https://uploads.strikinglycdn.com/files/e8f2c380-9327-49c3-862e-6f7e84247013/50557807001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b140de-6797-4281-9436-02de022f4a7d/34263533867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5157a870-e0b0-4584-b7f7-914d4c736aef/les_accords_au_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59459d34-76b0-42af-aec1-7acb74c05055/35540048568.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/c._r._e_form_2_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/textbook_of_bacteriology.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/maintenance_and_durability_of_concrete_structures_by_dayaratnam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1069/0719/files/93192829449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8530/7297/files/lofenag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/vuvarul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2868/4212/files/tireto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6727/2087/files/canadian_army_ranks_officer.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 extracted file (font_00_sfnt_off00006a14.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A14 5132 bytes
SHA-256: ebed38c51b3ed9fb7c657f9055a1218484087c5650cc1fd69be27a417f9af76b
font_01_sfnt_off00007b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7F 11380 bytes
SHA-256: a816489f116a6894fbace698fce373f2cca909eba709ec1aa0fdfa62ada2c8c2