Malicious PDF — malware analysis report

Static analysis result for SHA-256 a89ea1b36ad8312d…

MALICIOUS

PDF

64.5 KB Created: 2020-10-10 09:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4745f66902d4f3069033b26178f99f5b SHA-1: 33e2939c9d4fb32590aeee280ed528f974cee9ec SHA-256: a89ea1b36ad8312d40008e0a5ee05b328d22e70eaf19ccb3d98cdeda99de1bb5
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=pathfinder+2e+character+sheet+pdf In PDF document text
    • http://wuximid.allendaleunionchapel.com/uploads/1/3/0/7/130739169/sidemusepodelunuj.pdfIn PDF document text
    • http://files.barclayconsulting.co.nz/uploads/1/3/0/7/130738635/ralelog.pdfIn PDF document text
    • http://files.firefallseffects.com/uploads/1/3/1/3/131379115/4660776.pdfIn PDF document text
    • http://files.jdryart.com/uploads/1/3/2/6/132696146/b065d4a90dc6f.pdfIn PDF document text
    • http://files.swdcollections.com/uploads/1/3/0/7/130776822/6699929.pdfIn PDF document text
    • https://site-1040881.mozfiles.com/files/1040881/75519528145.pdfIn PDF document text
    • https://site-1039505.mozfiles.com/files/1039505/tedaxadirulikutodewadiz.pdfIn PDF document text
    • https://site-1042657.mozfiles.com/files/1042657/51816883131.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/ziruf.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/c9569428-0001-440c-967b-525011540c9f/lakuzuvosemetuwowulajazix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07b636b2-146e-4e43-95d3-901d53590a06/sanivinemazesobixusik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53fc61ce-78d2-45f0-8e86-cdb3ecc84d92/kefewijigegi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9416802f-eede-4bb7-badd-230e88aa79d1/gapan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9684b3fa-38f4-4eb1-b74f-22fd461578e6/72361930390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd63e0ee-3298-4a98-a6db-e0c488f8c74f/bovil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e9ffad-9622-4ba8-bd44-9ba7e1914843/66735302682.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_off0000b251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB251 5344 bytes
SHA-256: 93cc03a0330e15c369d0aaa6bd8cb2b705a8193b091c62f45ad8dc0bfe14c6d7
font_01_sfnt_off0000c47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47B 15396 bytes
SHA-256: 15df7002da537e0094cdcbfaa2419c2126163b4669b29ec5e68d7cf24b5c6f13

Open this report in the interactive analyzer, or submit your own file for analysis.