Malicious PDF — malware analysis report

Static analysis result for SHA-256 f47367d4c71542af…

MALICIOUS

PDF

84.6 KB Created: 2020-11-19 07:15:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b2eb7d57409075235998b274cca98e6 SHA-1: 17a90303e522a5e1eab18a0cb3d4d6dcf3d8c212 SHA-256: f47367d4c71542af702bf543315f1bd067767e37ff34f9ecf2d4cc3647fda754
214 Risk Score

Malware Insights

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

The sample is a PDF document that contains numerous links to external websites, many of which are flagged as malicious or part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary URL, https://traffmen.ru/aws?utm_term=global+gender+gap+index+2018+report, is identified as a malicious redirector, suggesting the document is used to funnel users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/aws?utm_term=global+gender+gap+index+2018+report
    • https://cdn-cms.f-static.net/uploads/4449421/normal_5fb3014bc3036.pdf
    • https://cdn-cms.f-static.net/uploads/4386084/normal_5f980a2e4b16b.pdf
    • https://cdn-cms.f-static.net/uploads/4378857/normal_5f8a52826d667.pdf
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5faa4130b3697.pdf
    • https://cdn-cms.f-static.net/uploads/4384469/normal_5f93c1d69e8d3.pdf
    • https://nadebexipopajin.weebly.com/uploads/1/3/4/6/134678264/xusatawevev.pdf
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f98fae9889fd.pdf
    • https://cdn-cms.f-static.net/uploads/4422377/normal_5fb259b2e78a3.pdf
    • https://cdn-cms.f-static.net/uploads/4379960/normal_5fa49ea146ae6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fefurorobumi/ophthalmic_lens_design.pdf
    • https://uploads.strikinglycdn.com/files/d48bdc7e-e527-4d3c-b9ac-e6ef9e540ab6/monupere.pdf
    • https://s3.amazonaws.com/zinudipir/sly_cooper_3_100.pdf
    • https://uploads.strikinglycdn.com/files/1b2d842d-dba0-4628-bdd1-601a35d92993/fluorine_atoms_valence_electrons.pdf
    • https://s3.amazonaws.com/voxulija/83589919091.pdf
    • https://s3.amazonaws.com/waxapoz/jenililuxizuwasovajo.pdf
    • https://s3.amazonaws.com/bidivo/rapidex_english_speaking_course_book_in_hindi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b41.bin
47d365c5ed08c935cbc42eaebf95dfefb301f11d6a73d1cd66606b3142c3f193		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B41 5708 bytes
font_01_sfnt_off00011ec4.bin
f2cd0b2dfe0a18d5a841b5674cc0a1a99146541ea80693faf600daf5f3077176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC4 11284 bytes

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