Malicious PDF — malware analysis report

Static analysis result for SHA-256 8378a3c7ac8d71c5…

MALICIOUS

PDF

42.2 KB Created: 2020-08-07 08:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7209cf1b773e1a82a91adccbb03da06 SHA-1: 6b9ed3eb997b88068e409e542437e6415826edf0 SHA-256: 8378a3c7ac8d71c54df172e7ea7d9fb620c2e010636f9ad9292449be96fd214d
128 Risk Score

Malware Insights

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

The PDF file 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 external links, many hosted on Shopify. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to deceive users into clicking these links, likely for phishing or malware distribution. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=time+value+of+money+pdf+ca+foundation'.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=time+value+of+money+pdf+ca+foundation
    • http://files.vineamentors.com/uploads/1/3/2/6/132695546/bakedukoxivulomutub.pdf
    • http://files.seedonlineordering.com/uploads/1/3/1/3/131379034/vuzajawibodaxut_nuvike_noxigopiwizi.pdf
    • http://files.txaddictionpain.org/uploads/1/3/1/4/131438348/8030468.pdf
    • http://files.thetlacademy.shop/uploads/1/3/1/3/131384789/dupive-madelubupazape-dezarekinoza.pdf
    • http://files.carnevalehockeygroup.com/uploads/1/3/1/3/131380870/larizusixub.pdf
    • https://cdn.shopify.com/s/files/1/0434/5584/0409/files/dexoged.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/vogupiwozuwubovibemipovog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopafomapezujiwowab.pdf
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/periodic_table_with_element_names.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/4613678939.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/dobefinomirikugike.pdf
    • https://cdn.shopify.com/s/files/1/0431/8114/6280/files/73323942567.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/step_up_3d_soundtracks.pdf
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/livros_behaviorismo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/vekida.pdf
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/vutozumesigune.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/97833637431.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/41559526379.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_off000069f1.bin
daa01de935b3845d6776004889e0b2b53ddc70b4561c93bdbc58034d9b5d742b
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F1 5136 bytes
font_01_sfnt_off00007b74.bin
4eb143dadbaa7019666a3064b328dc71ac171b32b3be84e59756ff6cac42d43c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B74 9412 bytes