Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb28827fc21b204d…

MALICIOUS

PDF

36.0 KB Created: 2020-08-26 08:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 507fa078eedaa3f0b64226050835b220 SHA-1: ffe9acb04ee1b0db10c047a62d05c7180a8bf269 SHA-256: cb28827fc21b204d4cb0cf1fb959930fa2d3616f918d6105774f214503af448f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to obscure malicious destinations. One of the primary URLs, 'https://ttraff.com/pify?keyword=dr.+arif+ahmad', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a coordinated effort to distribute content through various platforms. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates a probable phishing or malware delivery attempt.

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=dr.+arif+ahmad
    • http://files.sergeruffato.com/uploads/1/3/0/8/130814121/5253245.pdf
    • http://files.treehousehashomes.com/uploads/1/3/0/7/130739780/38f88c6b4b.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2080/files/arthashastra_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/72979428058.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/equipment_rental_agreement_form_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9423/files/puvepiwofenomezovawem.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/exit_here_jason_myers.pdf
    • https://cdn.shopify.com/s/files/1/0438/3608/0288/files/47680849540.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/cisco_ons_15454_dwdm_troubleshooting_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/tazepozojogiwujomituzu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/bigifikazegogenavokotu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/saduxakenaroximewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6966/files/fajimubiguvod.pdf
    • https://cdn.shopify.com/s/files/1/0432/6352/5026/files/3743594686.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_off000050e2.bin
71eacdb70a2b15f2b6efaedbe98fbd9d3751c239320e745584bb2852b46b5177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E2 4968 bytes
font_01_sfnt_off000061a8.bin
7b9df572090b7bf76717d607d8907f1ea7842fcba671998df007791d854ef980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 10064 bytes

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