Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2a4fffcfba5c17…

MALICIOUS

PDF

48.3 KB Created: 2020-08-23 09:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68618e2939eff65b97040193c61b5367 SHA-1: ec66742d477e7ce33c8b86a8214aeb5c2da3f060 SHA-256: bc2a4fffcfba5c17b004ab029c7422e28469c168f336bad905d92fcaab8f8c77
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the primary malicious URL and several other URLs, some of which are benign. The primary intent appears to be luring the user to the malicious redirector.

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=answering+your+own+question+rhetorical
    • http://files.cynthiahoyle.com/uploads/1/3/0/7/130775795/xejulet_pizokakakug_rovupi.pdf
    • http://mijifed.petenicholsonhealing.com/uploads/1/3/1/4/131455463/8c3721a6b.pdf
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/gawogixodimimetajixowug.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/nightmare_troubadour_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/vauxhall_astra_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/75374903653.pdf
    • https://cdn.shopify.com/s/files/1/0446/5616/5027/files/hypertension_canada_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/bolted_joint_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0428/9963/6390/files/53593860610.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/bofopixi.pdf
    • https://cdn.shopify.com/s/files/1/0455/3352/8229/files/ketogenic_diet_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/lenzie_meadow_primary_school_inspection_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/75998232566.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/assembler_2_en_1_seul.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_off00006057.bin
bd7ea1ece336ffe836d9176f06f9f5c9f98e936ab5c9082959dba3259384dbd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6057 5372 bytes
font_01_sfnt_off000072a5.bin
409e8fcef9d6ffdf9e0f0d2e4a17e7e7f006f50e427291eaffe2314d05cccde6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A5 10324 bytes
font_02_sfnt_off000095fb.bin
6842ca2bca1d32121e39df3907866b1cc934602ef53b9f2429905817d0796701		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95FB 18616 bytes

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