Malicious PDF — malware analysis report

Static analysis result for SHA-256 050bdc501bf8b2c0…

MALICIOUS

PDF

35.6 KB Created: 2020-10-08 12:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 753de22fcb7a09dec9899a472168166f SHA-1: 24c5c2396d4557d33835b1676047ba1925413b58 SHA-256: 050bdc501bf8b2c068e1073824a4f35aa57b0e32bb782024ad405b47ae547c11
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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/strik?keyword=rodamientos+de+un+motor+electrico In PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/feronu.pdfIn PDF document text
    • https://site-1040373.mozfiles.com/files/1040373/22060589462.pdfIn PDF document text
    • https://site-1039802.mozfiles.com/files/1039802/30044011320.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/zematotutivikexuroji.pdfIn PDF document text
    • https://site-1043959.mozfiles.com/files/1043959/12094701128.pdfIn PDF document text
    • https://site-1036659.mozfiles.com/files/1036659/82787196674.pdfIn PDF document text
    • https://site-1048273.mozfiles.com/files/1048273/29416047911.pdfIn PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/jevipijilozafaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc28b8a8-8089-4114-beaa-2857a7e56bd8/8461970334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71c79c14-35ad-4ee3-80d2-65f86cad9810/86051743554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9576b2fb-7016-4aa0-8c18-cfbfa24eb1de/50752999523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e4e726-edc9-4575-9755-10fff42195f7/giberikapidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5369/5647/files/city_siege_4_unblocked_hacked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4781/2248/files/56338626784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1670/4159/files/60028588159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7622/2621/files/hys_tc_300_linear_amp.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_off00004baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BAA 5092 bytes
SHA-256: 2791561e0d62f563bf48b82c286f677c692d0ec12294781961ae2854e529beba
font_01_sfnt_off00005ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE4 10700 bytes
SHA-256: 0419deb1b960f1bb0b9ee08377695680b5ee408eea2a9b43b4652f584e88db85

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