Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80400b6bfe60c05…

MALICIOUS

PDF

43.6 KB Created: 2020-08-27 16:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 863fe97c8997bfff38efb59b510834a7 SHA-1: e431bbdfa7fedadd423b39b25d4a7409c1a9cae2 SHA-256: f80400b6bfe60c05173490cb889967f25ac65b87047bd3db74b5e4abbfd6c8f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link farm with 18 external PDF links, including a critical redirector link to ttraff.ru. The document body also contains text suggesting a lure, and a heuristic indicates a clipboard command execution lure, implying the user is instructed to copy/paste commands. The primary attack pattern involves directing users to malicious infrastructure via these links.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=dolby+digital+live+download
    • http://files.noodleshopdesign.com/uploads/1/3/1/4/131406258/jaxifu-misulimoke.pdf
    • http://files.m2dsmedia.com/uploads/1/3/1/4/131409709/f30ca0.pdf
    • http://junutexib.tentaclesounds.com/uploads/1/3/1/6/131637016/vatepu-viwaves.pdf
    • http://files.athleticgrace.com/uploads/1/3/0/8/130814430/9871891f48e8.pdf
    • http://fesivetij.homochittohollow.com/uploads/1/3/1/4/131453540/6eadcd49.pdf
    • https://cdn.shopify.com/s/files/1/0457/6765/5580/files/korede_bello_mp3_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7254/4150/files/archimedes_law.pdf
    • https://cdn.shopify.com/s/files/1/0435/7128/2079/files/18236900830.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/1132717223.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/young_ones_of_animals_and_birds.pdf
    • https://cdn.shopify.com/s/files/1/0440/6837/2632/files/95054589421.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/19688436386.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/kurtulu_sava_cepheleri.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/define_the_term_socialization.pdf
    • https://cdn.shopify.com/s/files/1/0433/6045/2760/files/tikijisekakibuxawuvol.pdf
    • https://cdn.shopify.com/s/files/1/0436/4877/8400/files/12193594281.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/honeywell_cool_mist_humidifier_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/95885791688.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_off00006bc0.bin
2bbab76f50afbe491cfede7b3715e5c3e8e4204075ffe23ce7a31956846e231c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC0 5112 bytes
font_01_sfnt_off00007d5d.bin
73a76ef1a19201d633d22cc7666211821575df37982d9631b4e2b2e8d1fb21bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5D 10820 bytes