Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79e80f3d7fdd985…

MALICIOUS

PDF

59.6 KB Created: 2020-11-05 06:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d68837e6398c760c4b6274c01d6a4bae SHA-1: 326dc9d02938e9f758929ee29ae794a7d42f7bf5 SHA-256: d79e80f3d7fdd985ca2e8db46ca40bfe62c1c5e6c0f9f431aab9a653b79aa058
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL, https://ttraff.me/123?keyword=xr250+mongoose+mountain+bike, is presented in a way that suggests a search result, likely to trick the user into clicking it. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be a malicious link embedded within the document.

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://ttraff.me/123?keyword=xr250+mongoose+mountain+bike In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://mekukirofex.weebly.com/uploads/1/3/4/5/134589797/wiwuputotinabip.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/a482e32194787.pdfIn PDF document text
    • https://rixijufufapug.weebly.com/uploads/1/3/4/4/134497528/sudumubepar_dezomizupo_volaw.pdfIn PDF document text
    • https://lanigitekepag.weebly.com/uploads/1/3/4/3/134395773/jinavulaloba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1fca5b6c-a457-4799-a2af-3818cf4d691c/putuwivojenefuwunilinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35a44a2a-2ef7-4785-8724-21a0c7a535c1/27294487609.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/alternatives_conomiques_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/85471241890.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/waravadodolufojaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a7835f-2bac-4171-9a04-f53060da8628/wobewewega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/9092/4485/files/master_planned_communities_in_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/kritika_online_class_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f6a623-2a16-49a3-b072-2a6a21a28fc7/82327222310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5454/files/pegatevadixilivomofusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949b25c3-8516-4b48-889b-9189fa401d51/nijele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27ee3b59-f699-4cfe-acf0-53ae9e93222d/42369497927.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC0 5432 bytes
SHA-256: 63868b2aa3d680b39ab5b7e420fa354a7b5983baee2eb4ed944e8bae435d8670
font_01_sfnt_off0000ad0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD0E 11264 bytes
SHA-256: 66f2983e6f04adeef2597e6f36eebad2f9abb574695e15e3b24a35b51f2f37d4
font_02_sfnt_off0000d2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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