Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e013032e03b5c43…

MALICIOUS

PDF

35.5 KB Created: 2020-08-19 01:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f73d8b0ba892c14e871005cfd78fe5b SHA-1: 1a313ea8b647182c8006288aeee917ecc0815e59 SHA-256: 8e013032e03b5c43f2dda0bed878d05796a5d87687ab23aa0cb39329e5aca84b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, limiting the analysis of further payload delivery.

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=explosives+management+plan+template
    • http://files.socalseas.com/uploads/1/3/1/3/131379759/9937326.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/46104863176.pdf
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/defensa_siciliana_variante_pelikan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/2460422620.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/24506192052.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/9934550340.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/pogat.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1075/files/xuxowabogaruseluwefoxefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/63398776566.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9643/files/23599685833.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/60773602974.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_off00004fb0.bin
593a32cb7ab5b351370987db4326396a4dfe44b24f80c8187ceaa5032141b58b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB0 5128 bytes
font_01_sfnt_off00006125.bin
381acc7112a1637b5fd78c313ee530c482c84fc2ee646f85f07809df40e3ad83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 9420 bytes

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