Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7b18f48c0e6291…

MALICIOUS

PDF

46.9 KB Created: 2020-11-01 07:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 56cb89bba445650fa247f2ff54238155 SHA-1: 95caf248ee846a2731dc96f09c50e8e5987c733a SHA-256: 6e7b18f48c0e6291df443c775b3249a63020fc907561b922a417e093e092b579
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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://gettraff.ru/aws?keyword=black+star+of+india+gem+worth In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379046/normal_5f9180196a7f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f893265268a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_5f98d699a5df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5f8ef1ba139f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f90cc48a26d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380405/normal_5f8f50e2407f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f8d3341ec18d.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/559ea692-eb89-432c-b5b9-08eac54b98f7/jalumeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/cox_contour_guide_settings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2663/1834/files/bsa_handbook_2019.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB9 5640 bytes
SHA-256: cc56087cda3b94e917dc3d751de0e0c46817eb63a3d31c4d129a8e95e37216e8
font_01_sfnt_off000071d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 11716 bytes
SHA-256: 7da52a3d5c906f31ed243e9cf3c5c731ab3f2c584d9d4ca249212934ce40395d
font_02_sfnt_off00009977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9977 16068 bytes
SHA-256: 03a5ddad4a2a9171a93ce60914583e3601ab986f29a2c4cb248efc8e19c0a50a

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