Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe57703a97118f3…

MALICIOUS

PDF

38.2 KB Created: 2020-11-01 04:57:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4b9aec1f1442bc30c03c0c0ca4feaa49 SHA-1: 375b947d06009bbf57114c21c869070796cb116a SHA-256: abe57703a97118f38461220ee63fcaf1a9a79b1e71f303bc07888539a62114ab
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://gettraff.ru/pify?keyword=cleveland+high+school+reseda+bell+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5f8b1694503d1.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/2484142.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/1012226.pdfIn PDF document text
    • https://xexegetogud.weebly.com/uploads/1/3/4/3/134375989/4987458.pdfIn PDF document text
    • https://jixatazibasuv.weebly.com/uploads/1/3/4/4/134402985/xorefadovenu_zegukenu_liwaxav.pdfIn PDF document text
    • https://bupiwuzisulim.weebly.com/uploads/1/3/0/8/130874125/bedijasen_bovogokesazezov_juviba.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/1/0484/6845/9670/files/figures_in_latex_side_by_side.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bbba146-56b9-4ffa-aa99-45683a925df4/16252258790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8588/7167/files/giwaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2078/5068/files/tokujebatox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3a01f37-615f-4875-b259-73e21f5a3bff/81464197870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/501a21ea-6b0c-43f4-9fa8-2328161fa3e1/kajedoniboxobakositukulat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/341b3767-a3da-4cd3-9af5-1a497770680e/7496514514.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_off00005666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5666 5304 bytes
SHA-256: 615c30c4c487d95b3633b73d3ab9d42fe08b2eeb9ded24a63f1367cf95d2352b
font_01_sfnt_off00006869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6869 10560 bytes
SHA-256: 58588a1fd5f5cd87faa294a838fe64cb967d921eee24dddfc1b2a06a30282c2c

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