Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7901974a08d447b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-02 20:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07329b434c338534d0e0dac4d7575ff9 SHA-1: 35d6c412df4c07fef46ff91d00c3e85a8520b33e SHA-256: c7901974a08d447b9351fa2aa93da50e28ed157afb68bfe379d81f9b9bc4d496
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, indicative of a link farm. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=directional+selection+graph'. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content or manipulate search engine results. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=directional+selection+graph
    • http://files.talesfromthetravelingtavern.com/uploads/1/3/0/7/130775977/najiw_vetow.pdf
    • http://files.waterworks.nu/uploads/1/3/0/9/130969748/tuvimusasul.pdf
    • http://files.scotty-elmslie.com/uploads/1/3/0/7/130776503/29e1477389.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwizesovipijekugufex.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/sifukofebegukugetapowerab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8197/files/semiposiponi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/kijugub.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/soxanilagotanojaxos.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/miduzazimisapifotonolol.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/45325669721.pdf
    • https://cdn.shopify.com/s/files/1/0434/2969/1558/files/fukafukoxogobifuwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/nudiradisufor.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/67934277013.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/8379172455.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/york_diamond_90_manual.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_off00006168.bin
47c1cec1581fa651c4ba4179297acedcc3c23ceb849204088bfd270c9192b829
pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 5196 bytes
font_01_sfnt_off00007310.bin
60f4de9bbf36433d91ae9871182feaba6a56f1b447135ca5b174da2d50836875
pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 10156 bytes