Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0520473169ee12…

MALICIOUS

PDF

45.3 KB Created: 2020-11-05 22:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e808b9d89070f7d68f16dd27ade7c24d SHA-1: 250ff9f52cfa44e0f02af6d05ee32352ae3507d4 SHA-256: 5e0520473169ee12ce1eeea1c605abb16274178c7b6931af3d9255d701667f29
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafffe.ru/123?keyword=steam+siege+card+list PDF link annotation
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/foxisewowixubetaja.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/df415b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_5fa128b0c5fb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5f95ea15a5790.pdfIn PDF document text
    • https://kisigitoteke.weebly.com/uploads/1/3/3/9/133997396/govin.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/5140640.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/8319a542-4f4c-4afa-974c-252815c5601d/butubegigejezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22571c9b-7f71-4a5f-8a39-8aaaefdacfa8/91218466015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6085bbe6-924e-45ac-ad11-b1b0e588b36c/83311871149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c55805-c8da-4395-8262-4605258f91a7/42811826445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7de99873-a82c-4fd2-adca-c987cac21aef/de_de_pyar_de_full_movie_download_tamilrockers.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

Related samples 8

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_off0000594e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x594E 6060 bytes
SHA-256: 458c2cdd8c18af22a6f43473916ad8febe0b9bb88aad260135e0d98b6eec08ca
font_01_sfnt_off00006e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E21 5364 bytes
SHA-256: da79fe9ec583362bef19d6dd90a16e855bfdd197fc6c530596a62c3cc4fa98b3
font_02_sfnt_off00008043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 11476 bytes
SHA-256: 94152c25bd64f0cab24efcba03d6752bc2484a6fb7660bcfb7caa40378d29a10

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