Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2ed31b468c349e…

MALICIOUS

PDF

44.3 KB Created: 2020-11-05 21:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 11670936ef94362e09451ab3fdb6d537 SHA-1: b6141ae0778f7cb0c368fe1a4db62a1f81ff215a SHA-256: 8c2ed31b468c349e850d68723999b621ffb08aaf22486303cf0b93a3cce90b74
66 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or scam campaign. The ML classifier strongly indicated maliciousness, and the document body itself contains the malicious URL, suggesting an attempt to trick users into visiting it. No scripts were extracted, but the presence of embedded URLs and the ML detection point to a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffine.ru/123?keyword=pandora+radio+no+ads+apk PDF link annotation
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/4616062.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/vekesiku.pdfIn PDF document text
    • https://rukewopesix.weebly.com/uploads/1/3/4/2/134266340/2698217.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/20e9192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393189/normal_5f93be683ade7.pdfIn PDF document text
    • https://fikepeti.weebly.com/uploads/1/3/4/4/134489659/kevonixasirog.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/dd0e103c-6464-4ad3-999b-b247e20f2cf4/najenadiduwo.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/milady_s_standard_professional_barbering.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/child_development_and_pedagogy_in_gujarati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0890592e-a878-4da3-b16c-e78ec1bf3298/fupasemoredewerejogam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/effe9265-7d16-4f01-aac7-ee99e988ff4c/62808856842.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/pdf_to_word_converter_software_freeware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7996517-733c-4f1c-9313-36923664bdcc/10757634079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4edce90-384b-46b6-8906-3aedd5c4718a/makubuvegisonebolutatunu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/35850964081.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_off00006f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F56 4988 bytes
SHA-256: 3bedc7b3d13465738b468e5246d8fd5a6b6806541a04667acf0eddbc2eafe8d2
font_01_sfnt_off0000805d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805D 10672 bytes
SHA-256: 53f342fdea4bfd5176e0429956ba3de14175f66c65f698e0e599795a3b961b15