Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5a65ac08501c58…

MALICIOUS

PDF

101.7 KB Created: 2020-08-07 17:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81c9c88d589f3723698bc090306ef973 SHA-1: f1fa17855c71bcb6a00f5cb82d6554c6e370a444 SHA-256: cb5a65ac08501c5853a8b04b24e78bb4ac35003e8eb6ddea41f143e4ce95f53d
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=liberalismo+y+neoliberalismo+economico+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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/pify?keyword=liberalismo+y+neoliberalismo+economico+pdf
    • http://files.bowenworknh.com/uploads/1/3/1/3/131383333/797e99c.pdf
    • http://files.customdecorativemetalwork.com/uploads/1/3/1/8/131856330/nelitufaxulilev.pdf
    • http://files.fleksone.com/uploads/1/3/2/7/132740415/jidamuzizoso.pdf
    • http://files.nativecallings.com/uploads/1/3/2/7/132712206/vofumugelog.pdf
    • http://bodozu.transitionplan.org/uploads/1/3/1/4/131437615/1952548.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/69467730842.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdf
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/56095159836.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/16656054815.pdf
    • https://cdn.shopify.com/s/files/1/0431/9700/5981/files/spandana_application_form_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/6942356094.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/talijofazejodo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0306/8068/files/factores_sociales.pdf
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/kupikizukufugonoxiseko.pdf
    • https://cdn.shopify.com/s/files/1/0435/9186/0379/files/55090617361.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/38584491788.pdf
    • https://cdn.shopify.com/s/files/1/0438/8149/6744/files/17153083267.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/39923879863.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012adb.bin
62426e65687741a62f38df33559738a465ed2e7f1b3833fbefb367301b75cccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADB 5192 bytes
font_01_sfnt_off00013c5c.bin
3a8f2dce7ff652ba1faab200edfdd30174bff31d5655a06583f5c5c3380c53f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C5C 12332 bytes
font_02_sfnt_off00016445.bin
e1ecdaf5f931254822c08e14176e742ed940844fb6ecb9fcb1e73603f1784b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16445 16076 bytes
font_03_sfnt_off000178ed.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x178ED 4324 bytes

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