Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd30a0510c4beaab…

MALICIOUS

PDF

41.6 KB Created: 2020-11-08 05:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 59fc8c9b1e07d74abb1d84017f6ff03c SHA-1: cbeae677851cfc680dea7f90b5e000d1f7c889e0 SHA-256: bd30a0510c4beaab39198677b15d2818c9c61e7736de55eb9fe1ac395feae484
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by an ML model. It contains a large number of embedded external links, with one prominent URL being https://traffnew.ru/123?keyword=damn+bad+intentions+lyrics+ft+migos. The presence of a link farm on disposable hosting suggests a malicious intent, possibly for SEO manipulation or to redirect users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/123?keyword=damn+bad+intentions+lyrics+ft+migos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421040/normal_5f995b768bd2b.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/femesuzef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464709/normal_5fa62bd139895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5f93b4f2c7d78.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/5357607.pdfIn PDF document text
    • https://nirorozarijax.weebly.com/uploads/1/3/4/3/134342495/zilinezowi.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/6117b07.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/866f9c6956dfb96.pdfIn PDF document text
    • https://jafadunew.weebly.com/uploads/1/3/4/6/134632108/2486700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5f8b702a7c334.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f872628dabb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373753/normal_5f90bd0e99b23.pdfIn PDF document text
    • https://sosegesidor.weebly.com/uploads/1/3/4/4/134465043/jafuwikemulaxetifumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_5f98eb69440f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5fa6fd94c2c3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000063ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EA 5580 bytes
SHA-256: bf6feee2a9a2e1a32c45a6494bcf1fdfbd794e9e2f35f0f4a95f2cddce856d54
font_01_sfnt_off000076d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D9 10140 bytes
SHA-256: f9ccbd9ee96ae6d01b17bb277d34ecc9fc3517e4eca0380c2e81cdcf0fb14eab