Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b5edc86273e7f63…

MALICIOUS

PDF

44.7 KB Created: 2020-08-24 01:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68f77e143a7b6bf62d7ecbf0bfc20e3a SHA-1: baf83b39e601d94bf6a43052e92a4fbc6903798c SHA-256: 2b5edc86273e7f6353de0fa20b3d29dda27a318b5c734ba1a4441503ff9a76d6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL, https://ttraff.ru/pify?keyword=formal+attire+black+tie+invited, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external malicious content. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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=formal+attire+black+tie+invited
    • http://files.home-farm-shop.com/uploads/1/3/2/7/132741225/226109.pdf
    • http://files.honeywestco.co/uploads/1/3/1/6/131606550/2586103.pdf
    • http://gixofu.savingthosewhosaveus.com/uploads/1/3/1/6/131606490/bitopalexora-pusefexaxili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/25019433727.pdf
    • https://cdn.shopify.com/s/files/1/0464/6567/9512/files/ccleaner_crackeado_2018.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/house_rental_agreement_templates.pdf
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/73163523111.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/clicker_heroes_gold_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/17229196824.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/link_react_router_dom.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/tuwakakojimizagubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/divojurokiravikanek.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/kojuzuvivovewebavaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/witepuxem.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/wasudupalubiwive.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063c4.bin
a046d217ec14233a1e000d12a494ecb581bbc36ab69e2e371c4df08737f7b7db
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C4 4912 bytes
font_01_sfnt_off00007459.bin
ecc562c00c199b7ecc59c97218fcbc384fcf822e5f3dcd12fed7cc311331a062
pdf-font-stream PDF embedded font (sfnt) at offset 0x7459 10316 bytes
font_02_sfnt_off0000979c.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x979C 4324 bytes