Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d793feb2631ef99…

MALICIOUS

PDF

42.1 KB Created: 2020-10-05 04:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8918e9cf7f136cae2e0c82ac1bdf3a1d SHA-1: 74fc7dde9c2982eaa7bb20baafd1cd7d9790938c SHA-256: 2d793feb2631ef99b246370fce86c213887020c3103f8c6d99cb02b614b59b58
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=pelicula+de+spirit+en+espa%2525C3%2525B1ol In PDF document text
    • http://files.dennisvanderspoel.eu/uploads/1/3/2/3/132303043/6220570.pdfIn PDF document text
    • http://files.beckyalthouse.com/uploads/1/3/2/7/132712413/3383134.pdfIn PDF document text
    • http://fejadogut.drdavidzuniga.com/uploads/1/3/2/6/132682063/bd09d.pdfIn PDF document text
    • http://files.prettylittlebath.co.uk/uploads/1/3/1/4/131411088/leludiguvadov_dofatobe.pdfIn PDF document text
    • http://xosis.allure192.com/uploads/1/3/1/8/131857916/6742079.pdfIn PDF document text
    • http://files.curebalm.com/uploads/1/3/1/4/131482941/vijeg-digarapisigedo-bobula.pdfIn PDF document text
    • http://files.slovak-club.co.uk/uploads/1/3/0/9/130969405/c44b1aa.pdfIn PDF document text
    • http://kodudal.uucsarasota.com/uploads/1/3/1/3/131384306/todip-vawogijibeze-sapuluf-gakabewu.pdfIn PDF document text
    • http://files.alcfes.com/uploads/1/3/0/7/130739376/xexagipemutun.pdfIn PDF document text
    • http://gabirul.fundingaction.com/uploads/1/3/1/4/131437462/joduseveponuwa-paloni-kizeroxu.pdfIn PDF document text
    • https://site-1038808.mozfiles.com/files/1038808/jabosidosixulus.pdfIn PDF document text
    • https://site-1043766.mozfiles.com/files/1043766/58348435798.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/5884a48f-7f3e-4d8a-b964-4eb5f75aaa62/dufolaxuzemewesotimofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3fc0649-9b99-48d7-8fa2-c828e9e98137/3948071048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69b265ff-db12-4115-a3d3-def754022515/40249547059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0428052-956f-4b49-8a47-5a09dfd6f9c6/8335427044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/205dc3fd-3d34-488b-8bf6-da1010d9f5e0/56748788540.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 8

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_off00006580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6580 5280 bytes
SHA-256: a9729e199e7bceeb2406b3e307cad24568ffa1378a48f560c2b7812601986c46
font_01_sfnt_off00007743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7743 10128 bytes
SHA-256: fcfda162645bd47d6f3875d6a51e9b12531e7ae86dad50580b3bba4283f6605b

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