Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2ad7b508c49573…

MALICIOUS

PDF

39.7 KB Created: 2020-08-22 03:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afbefa16a41feb064ec78507a599705a SHA-1: 4e862163d450937d5a543009d587a2b4203e23b0 SHA-256: 9b2ad7b508c49573db37d82ed1189376a265b7b1726176272c76f6ce198901f5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=bluetooth+usb+dongle+for+android+tv', is flagged as a known malicious redirector. The presence of a link farm and a malicious redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=bluetooth+usb+dongle+for+android+tv
    • http://files.allfloorsinteriors.com/uploads/1/3/0/9/130969375/kexajize.pdf
    • http://xumixufi.e-badmintonclub.com/uploads/1/3/2/6/132695615/29c2822134b.pdf
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdf
    • http://files.latilla.com/uploads/1/3/0/7/130775346/riweneboti.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/aorus_app_center.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/sozivamagijekewigulokoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/56869683769.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/architecture_meaning_and_place_selected_essays.pdf
    • https://cdn.shopify.com/s/files/1/0433/3980/8922/files/dubesip.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/50365568547.pdf
    • https://cdn.shopify.com/s/files/1/0431/5371/9453/files/85873297204.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c9e.bin
f0df96cb7ddaf18a8fc324be585af4029edb392dd7b2012b0e6b2d4d94287707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9E 5420 bytes
font_01_sfnt_off00006f09.bin
94bd78dd4d640e4e1997624516b91743720ce84f8e6d4feccdc188f77c60ba73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F09 10284 bytes

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