Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49b70a0ab8e0a80…

MALICIOUS

PDF

58.1 KB Created: 2020-08-16 17:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dcbc8c21658572a2ade999cab700a23 SHA-1: 7fc70b7d44a9b5b6108b071cb1fcd9a9df17db34 SHA-256: c49b70a0ab8e0a802478188569eea7c86fd917ba1ce1bd36b86cc96ba2781769
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=caricature+apps+free'. The document body, though heavily obfuscated, contains this URL and other links to Shopify, suggesting a link farm or redirection strategy. The primary intent appears to be directing users to malicious infrastructure under the guise of offering free applications.

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=caricature+apps+free
    • http://wuwejejo.hairbypearl.com/uploads/1/3/1/4/131483147/8430430.pdf
    • http://files.myownmarketingcoach.com/uploads/1/3/0/8/130813489/4563845.pdf
    • http://files.allaypdx.com/uploads/1/3/1/1/131163897/e210e073df28d.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/ps_touch_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/9883/2037/files/learners_license_questions_and_answers_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/furezevexedujefi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/71588511517.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/11409161832.pdf
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/83966484490.pdf
    • https://cdn.shopify.com/s/files/1/0430/5171/2666/files/rifedizemodututi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/bless_the_broken_road_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/xapen.pdf
    • https://cdn.shopify.com/s/files/1/0430/4984/4890/files/18952711785.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_off00008bc1.bin
6cff7c96543157d8e7f11dab3c25688d96cfc4ef1de62600411233dd69358a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC1 4880 bytes
font_01_sfnt_off00009c62.bin
2c860834b7602631a094026d319e090350bac4e0c5fa782e47e8de3b249b82ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C62 5248 bytes
font_02_sfnt_off0000aada.bin
16e7c7c9ff6de15be6e4c226a8ee1fb8b7030c52bf4c00368cfc2f6aae732bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAADA 15384 bytes

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