Malicious PDF — malware analysis report

Static analysis result for SHA-256 327e72f8ba3e744a…

MALICIOUS

PDF

42.5 KB Created: 2020-10-16 09:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6c37ac8bc535ad1f0866cb9fb9fdcfc4 SHA-1: 1afccc8cecbcc47824976d9b2f9b94b8171ddd69 SHA-256: 327e72f8ba3e744aa3adef20eac6910a063a1bcb341ad45e08fbc3c5f86d44cb
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=crash+1+ps4+trophy+guide In PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/9922564.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/6714612.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/mudonij-tojoxe-xewej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f8716e7a050e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f8710ffa0cf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8760469e7d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f87afdd4657d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f887205911ee.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/48794f1.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/9562653.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/wikodo_zufem_konujirulobuji.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/daadb142-09de-4dc2-b5df-e07598ed4d77/69270816675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa339c55-b932-4360-aca6-e638bc199e97/wezizusameboperegape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78d1219-5cf6-4ce9-9631-bd6880804346/roxukomino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4fb3604-a35b-4a65-9123-004bad52df31/vumifezelovadilitapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2b3e0c0-9262-45a1-991d-3349666250bb/mikopim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af6a79d4-607b-421d-8999-d480d1068c12/9474401763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb8a7941-b88c-4960-a925-41646a286f8a/rudasenudijomete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d31e3631-02cb-4848-93bc-4c7948b534c8/46218246755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0c3a04-3833-48a7-a988-aada4cee039c/vaniwabeziririzedebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b71c66-5236-41a9-80ef-d63816d62c43/taxobunikiwogirewelo.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_off0000658f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658F 5336 bytes
SHA-256: f02d788322b64917c24eca67f1dd27f2c8a18ee0391f2ff7c8839d148e13b09e
font_01_sfnt_off000077bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 10712 bytes
SHA-256: fd4713756a997d3240e420744c4b6b0011050a5bbc2e5db0b00c1de77d66d76d