Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb5376fccec6a9d1…

MALICIOUS

PDF

44.6 KB Created: 2020-09-03 10:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e314028f1645af5e876d76f35343f8d SHA-1: 2e85b67fd1397cfd10b933c54ca65bf5621c3269 SHA-256: bb5376fccec6a9d169ae845a6b61169c498e5925e73fb377c531d0f26a48dbc1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One prominent link, however, directs to 'ttraff.ru', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Gta vice city game all cheats' and the malicious URL, suggesting a lure to entice users to click the malicious link. The presence of numerous links and a malicious redirector indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure.

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/wix?keyword=gta+vice+city+game+all+cheats
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0431/1678/9927/files/gikilidijusonodugejine.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/vadopogenuxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/6966832602.pdf
    • https://cdn.shopify.com/s/files/1/0435/7308/4319/files/a_pocket_style_manual_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/xiduvovulizata.pdf
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/69859384482.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/company_balance_sheet_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/discord_change_font.pdf
    • https://cdn.shopify.com/s/files/1/0461/8318/6585/files/papier_thermique_hs_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/togufijoxevuxida.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/understanding_and_using_english_grammar_fifth.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/casual_leave_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/rapegajaworobofozipim.pdf
    • https://cdn.shopify.com/s/files/1/0431/1577/4108/files/d_d_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/cake_recipes_for_beginners.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_off0000713a.bin
8665112cccd4b4a991f11aa7a3fc1aefb9493c7e873c646cde7fe97f4cb0f2cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 5308 bytes
font_01_sfnt_off0000833c.bin
b62d674c6cec2f2ac5e209e16c68d24977a61ebba92e3ea6af1a99caac5f2da1
pdf-font-stream PDF embedded font (sfnt) at offset 0x833C 10112 bytes