Malicious PDF — malware analysis report

Static analysis result for SHA-256 5556342a3b62b8ce…

MALICIOUS

PDF

125.5 KB Created: 2020-08-27 22:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63e0caac8b126b2ba6fd50d96e178987 SHA-1: 1a3e859216972c36b1aa972a226c768c0e25303d SHA-256: 5556342a3b62b8ce059f81fbd2209d20231621971ac1bfc2a8e5c409416f0573
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to 'Instalaciones sanitarias en edificio' and the malicious URL, suggesting a lure. The presence of a PDF link farm further indicates malicious intent to distribute links.

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=instalaciones+sanitarias+en+edificio
    • http://zotiti.brooklyndreadlocks.com/uploads/1/3/0/8/130814328/saxuvaxalulik.pdf
    • http://roronawop.haddac.co.nz/uploads/1/3/1/0/131070420/994825.pdf
    • http://bodekeveb.dw-treeservice.com/uploads/1/3/1/4/131407406/2349007.pdf
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/fdcpa_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/vovugakirim.pdf
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/donuxolutogopigazedol.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/62048847044.pdf
    • https://cdn.shopify.com/s/files/1/0443/9041/6550/files/gezewixuvemiwolemofeko.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/52733817477.pdf
    • https://cdn.shopify.com/s/files/1/0439/2537/3083/files/printable_brain_teasers_worksheets_with_answers.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_off0001949f.bin
97623e092b01102f33f136309d44ca8081881e16c62ac2ca2e6674cf8ea0b2f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1949F 2756 bytes
font_01_sfnt_off0001a07a.bin
4a77e014346703966ff730d88b3417be69a29bd62a73fff84cc091a873947256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07A 4952 bytes
font_02_sfnt_off0001b149.bin
6f7caf5735fb377f3387066babfc43184602cdf82b96d5b87e884ef5805cb4d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B149 18064 bytes

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