Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a3b8280c29784b…

MALICIOUS

PDF

34.7 KB Created: 2020-10-10 12:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d62fe90cbc9af51075f90035c2ed7205 SHA-1: dfe0b115b95e23ad32efffd82965b139c343d48e SHA-256: a6a3b8280c29784b8465c04b9b9e4782f1e6bc522cb070cf9413130958b9896a
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/pify?keyword=on+demand+assessments+istation In PDF document text
    • http://files.lesbiandiscussiongroup.com/uploads/1/3/0/9/130969198/mugonufavokavad-xevumezunepim-judina-vufetas.pdfIn PDF document text
    • http://files.thelearningoptions.co/uploads/1/3/1/3/131380745/3804327.pdfIn PDF document text
    • http://gapuwuvu.blinkgatproducts.com/uploads/1/3/0/8/130874012/vajopanivi.pdfIn PDF document text
    • http://files.justalittlepricktattoo.com/uploads/1/3/1/4/131406806/xiwifelel_bobefujiboxuxu.pdfIn PDF document text
    • http://files.cafezippy.com/uploads/1/3/2/6/132680922/5061853.pdfIn PDF document text
    • http://juzav.ritwikdhandhi.com/uploads/1/3/1/6/131606739/zufonovesugobiga.pdfIn PDF document text
    • http://nujog.calledoutsetapart.org/uploads/1/3/0/8/130814788/32a65032509b1.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/42d3d5c6-8536-4013-bc84-c852071f4007/saresefugufus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98fff13a-9aa1-45ac-9d88-f8badf7213f9/53992359771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365af598-12e4-4354-8b5f-bbcb48322d64/xikiximevelavod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf992088-d93d-4a75-82ea-073a2c2265eb/dixuxavovike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e3d13c-f153-4996-83a0-66435b420f27/bopolitituso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1ce2dcb-2cdb-4d8a-9d1e-203659f6c84f/bajesiduguvaxegubomonar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbac305f-d117-44d3-8533-c86631042a4e/75502518690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3e82581-fa9c-4fb2-8e53-5822d8332f19/gulugufotepani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/888e2f1b-e8f2-43e0-8338-77c80a326ef1/konudaledove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5d8fd2-4d13-46be-8d84-70b16364d8c1/96527532607.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD7 4872 bytes
SHA-256: f0ab3e3a89c0aeb335faa1d9221cfcf610b8fe0ea31a9df728a23f41c7213d1f
font_01_sfnt_off00005b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4D 9956 bytes
SHA-256: cdc3e207a90f5ca9290a2bc406962d0826b857e791ea75e02d8736ca96fa7e65

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