Malicious PDF — malware analysis report

Static analysis result for SHA-256 41f916c640f2386e…

MALICIOUS

PDF

45.0 KB Created: 2020-08-25 16:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fefceeeaa028adb83af048946a4a6df SHA-1: 99da69d6587976e5b11808ae0bf81cf0b53aea1a SHA-256: 41f916c640f2386eb85396ab91a55163dc7bdab35566baa8c97ece906cfa2a24
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bones+tv+show+episode+guide+season+7'. This URL is presented within the document body, disguised as a TV show episode guide, indicating a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files. No scripts were extracted from this sample.

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=bones+tv+show+episode+guide+season+7
    • http://files.istitutomondoitaliano.org/uploads/1/3/1/0/131070379/2427500.pdf
    • https://cdn.shopify.com/s/files/1/0440/0077/2246/files/calendario_laboral_comunidad_de_madrid_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/3170/8316/files/pubulolud.pdf
    • https://cdn.shopify.com/s/files/1/0435/5591/3879/files/coulombic_attraction_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/papers_please_mods.pdf
    • https://cdn.shopify.com/s/files/1/0435/2724/1879/files/muxepebapebinegukowufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/76979176034.pdf
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/cours_fusion_absorption.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9949/files/mazure.pdf
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/dewenosuxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/widusuwazetat.pdf
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/juzixu.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_off0000637b.bin
ed890358b100015d4cf2a02cfec0753ef0152d6b014be606a9fa3a6b175878d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637B 5256 bytes
font_01_sfnt_off00007579.bin
b79e0224af6097f1002d2cadd57896be6c5c7af3a739df4d2c31b9572eac7a5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 10420 bytes
font_02_sfnt_off0000991e.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x991E 4324 bytes

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