Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d86a8b66e0b47e…

MALICIOUS

PDF

46.3 KB Created: 2020-07-30 10:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe5c3869e93fb34cfadd2e73b2145172 SHA-1: d5c2c96e1abf52cb0deeac9b018d459113aa6917 SHA-256: f1d86a8b66e0b47ebccc636b6d4a8a8f9965afc11088872752b428b8d58856a8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, disguised with a lure related to a 'boy scout handbook'. The document also contains a PDF link farm, with many links pointing to Shopify domains, likely to obscure the malicious redirector. The primary malicious IOC is the ttraff.ru URL, which is likely used to redirect the user to a further malicious destination.

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=boy+scout+handbook+6th+edition+pdf
    • http://files.pauer.photos/uploads/1/3/1/4/131407857/8288459.pdf
    • http://files.storyshack.org/uploads/1/3/1/3/131384113/xidubixojizajipap.pdf
    • http://files.intersektart.com/uploads/1/3/0/9/130969673/eebcf3a9f97a5.pdf
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/zaxifi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/sarodizaduv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/90053346891.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/bevifosugalu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5103/8358/files/noxajipomuxupeja.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/durinozube.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/muwimelemokopaboso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5250/7036/files/23604538145.pdf
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/buvaloki.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/vakalegefitumokatab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/misativoxafolitatosasifa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/vixalonerarimadarol.pdf
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/54359159644.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/
    • https://cdn.shopify.com/s/files/1/0440/5103/8358/files/noxaj

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076f6.bin
165a8302edddeca3d5b5c6c9a29e4a8f5f44dd886e5d486fad565ddcee4fcd47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F6 5508 bytes
font_01_sfnt_off000089a7.bin
013647ad51a67d4dc7aad5be9792635cef3c809edf9b6fd00087cc2b13ef3e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 10208 bytes

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