Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b68b2f19624f163…

MALICIOUS

PDF

34.5 KB Created: 2020-08-23 05:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99cff23f227253fd8d136219a5412218 SHA-1: 41247a86dd0a8b066349a9c4e4c7636d6c5dd131 SHA-256: 2b68b2f19624f16364b124330d42e121a98249f76b07144433c0ec0b1cd105fc
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. This link is presented within the document body, disguised as a user manual. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious URL is https://ttraff.com/pify?keyword=bernina+1008+sewing+machine+user+manual, which likely serves as a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=bernina+1008+sewing+machine+user+manual
    • http://files.thepottershousesandiego.com/uploads/1/3/1/4/131453535/a83a1cca32.pdf
    • https://cdn.shopify.com/s/files/1/0433/5520/9879/files/12194194469.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/nileka.pdf
    • https://cdn.shopify.com/s/files/1/0438/4276/4962/files/bookshelves_plans.pdf
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/western_union_receive_money_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6323/0116/files/fx-_115es_plus_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/0445/9168/files/equidad_de_genero_en_el_peru.pdf
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/colorfy_premium_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/pulisakutojopoxexunibigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7814/7491/files/54405173111.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/76875184287.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/pomobujipa.pdf
    • https://cdn.shopify.com/s/files/1/0427/9150/1990/files/free_xbox_game_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.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_off0000490a.bin
8326a833a48d4c7fee2054d0d739f6a7fd3b2db85353506e28cb59bef5201f08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x490A 5744 bytes
font_01_sfnt_off00005c7d.bin
512b6b4b7d9368bb26cb13e6e55b631975641bbad08c0219d5cca145c6b83c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7D 9492 bytes

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