Malicious PDF — malware analysis report

Static analysis result for SHA-256 3814df9b28cce3d2…

MALICIOUS

PDF

36.2 KB Created: 2020-08-02 19:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 560db99596b561eeffa60bd50cd99a33 SHA-1: 688d9a487e9316d08edb084120feade87f77abba SHA-256: 3814df9b28cce3d21a6afffbb23505b0fb0a80e2caa01382fe43e4ab6ad9c07e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious URL is https://ttraff.ru/pify?keyword=pathfinder+core+rule+book+pdf, which likely serves as a lure to download further malicious content.

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=pathfinder+core+rule+book+pdf
    • http://files.dmrproductions.online/uploads/1/3/1/4/131437593/8fa0f1c04480411.pdf
    • http://files.winchad.com/uploads/1/3/1/4/131406365/ronufesipedawis.pdf
    • http://files.rosanaourens.com/uploads/1/3/1/4/131437725/7046049.pdf
    • http://files.southviewcaravansite.com/uploads/1/3/0/7/130775331/gejolarisawonib-mikajowul-xugomogura-solinijagofer.pdf
    • http://files.sandrakarlspaper.com/uploads/1/3/1/4/131437685/xagezusaxani.pdf
    • https://cdn.shopify.com/s/files/1/0430/7560/0535/files/92321775683.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/welabenazulelaxatogitili.pdf
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/vewobewexofidavunewene.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/67905899659.pdf
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/18248966148.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/53853984723.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/24252351441.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9021/files/nifibov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/48133218911.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/91724369477.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.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_off00004ff0.bin
da9f91d9a436e99364e964713fa8b1d1683e7c124fc217b4c60e992faae286ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF0 5272 bytes
font_01_sfnt_off000061d3.bin
a6be323031d5a3cf1545458e3dcf8a42bd23659247259256b72aee178a3a796c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 10116 bytes

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