Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d10713680d9efde…

MALICIOUS

PDF

38.2 KB Created: 2020-10-16 20:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f838f0959222a23d14bc748baf11b6fc SHA-1: ecfa1d2a40edcd2585eb60ee2195ad03512509d7 SHA-256: 3d10713680d9efdeec274dd1da02fde98f25949eacef923b07bd29f0437fc07a
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://ggtraff.ru/pify?keyword=curriculum+and+instruction+jobs+ohio In PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/rorame.pdfIn PDF document text
    • https://jozokuxig.weebly.com/uploads/1/3/2/8/132814463/balem-wofusezoragate.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/xovejaxikufu_kosev.pdfIn PDF document text
    • https://waniremupamed.weebly.com/uploads/1/3/1/4/131407535/0736e871.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/toragexo-zusebenagura.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/6792893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f87bc4e81492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f870b5fe3c7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f8726c1926c0.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/gidosaz.pdfIn PDF document text
    • https://ziperivowupidu.weebly.com/uploads/1/3/1/3/131381589/muvapi-garutowonofi.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/nidisetati.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/2a74280d.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/2381356.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.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/1/0501/9638/1871/files/fipevepupuvufijufagezibax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3434/0259/files/monster_truck_games_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/7450/4854/files/penowekesupokixizaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3445/6476/files/fafatekanazapebakiniz.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_off0000562c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x562C 5300 bytes
SHA-256: 4e96bafab5b4d30dc4a9ead8ab92e014672742fe14b677f1b276faa4b64c7991
font_01_sfnt_off000067f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F7 10516 bytes
SHA-256: 98cb3c51d173a2c45fac1c3557930f893a3bd6d63bb5ffcbb9af3c99d23c2879

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