Malicious PDF — malware analysis report

Static analysis result for SHA-256 807d6c579189e0ae…

MALICIOUS

PDF

39.5 KB Created: 2020-08-21 19:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85fd2c1fd4e4065bbacc4a8b416ac1ba SHA-1: 973e8f814e7091f880f46ff151da5202b7f3b85d SHA-256: 807d6c579189e0ae5c41d6bf7f80228f33b63c61f5c99e4bab3717c5a4c43ac7
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, a technique often used for SEO poisoning or to host phishing content. One prominent link directs to 'ttraff.com', identified as malicious redirector infrastructure. The ML classifier strongly indicated maliciousness, and the presence of numerous PDF links supports a content-driven attack pattern.

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://ttraff.com/pify?keyword=instagram+stories+templates+highlights
    • http://files.merryhillweddings.net/uploads/1/3/1/4/131438449/247fb.pdf
    • http://tixijoka.dianakurin.com/uploads/1/3/0/7/130738697/9717000.pdf
    • http://files.lwphysiques.co.uk/uploads/1/3/2/6/132695190/wuzudog.pdf
    • http://files.musicamenities.net/uploads/1/3/0/8/130873833/1457896.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/9824/7078/files/capitec_sponsorship_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdf
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/vutifimetuxumigirapuzus.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/38050617020.pdf
    • https://cdn.shopify.com/s/files/1/0439/4831/0683/files/lowes_heath_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/european_society_of_cardiology_guidelines_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/8687/1712/files/files_2_folder_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6165/files/overview_of_computer_architecture_and_organization.pdf
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/ews_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/0469/8534/files/bebutebojumemararumu.pdf
    • https://cdn.shopify.com/s/files/1/0451/0469/3400/files/65193967480.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/doena_de_alzheimer_fisiopatologia.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_off00005c29.bin
690ac007f6c3dbb792d032dddcc00087a018a6c91686685ca7e56201f2772c24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C29 5172 bytes
font_01_sfnt_off00006d8c.bin
84e15c02b1c1403c6777c41bbd86fe52a9481744522067507a172b37112adeb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8C 10360 bytes

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