Malicious PDF — malware analysis report

Static analysis result for SHA-256 2459420da520e000…

MALICIOUS

PDF

67.0 KB Created: 2020-08-14 14:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91d996054ca1a294fd6e0a9a41a7ddce SHA-1: 07281b50dfdca44bc7b6708f831890a07b7fe200 SHA-256: 2459420da520e000a0a3a1b33aadf6085143f5949828960531bfbaa06656eeb4
160 Risk Score

Malware Insights

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

The PDF contains a lure to 'Update windows 10 free' and embeds a link to a redirector. This redirector, ttraff.com, is known to point to malicious infrastructure. The document body also contains the URL, reinforcing the social engineering attempt to trick users into clicking the link. The presence of a link farm and the general nature of the lure suggest a phishing or malware delivery attempt.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=update+windows+10++free
    • http://siwosuva.sunnydayspreschool.net/uploads/1/3/2/7/132712050/pumobip.pdf
    • http://files.goringandstreatleyprobus.co.uk/uploads/1/3/1/0/131070207/5083973.pdf
    • http://files.14skydesign.com/uploads/1/3/1/8/131871778/luxunutage.pdf
    • https://cdn.shopify.com/s/files/1/0438/1389/6352/files/plant_physiological_ecology.pdf
    • https://cdn.shopify.com/s/files/1/0438/5187/4466/files/kotusetemomaxatag.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/69749512218.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/43556029307.pdf
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/kirifupijebilejetake.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/safajararunokevavuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/99276412796.pdf
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/42749752154.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/66485146239.pdf
    • https://cdn.shopify.com/s/files/1/0446/8060/9945/files/3d_text_effect_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0444/3789/7383/files/worumef.pdf
    • https://cdn.shopify.com/s/files/1/0433/2444/0729/files/juluzuwevavul.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/cnn_games_eggz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/xemafitovelonen.pdf
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/dulevukusekigujabosojefi.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_off0000c73a.bin
5963b300777a43bc790e9c079d7f5ec5b36951f7dd5e2dfd44c18a808361bb0a
pdf-font-stream PDF embedded font (sfnt) at offset 0xC73A 5280 bytes
font_01_sfnt_off0000d959.bin
b8248221dad30a4cc7f466846922472a1eeb4f77c2c4b370754d6ab55c0b8792
pdf-font-stream PDF embedded font (sfnt) at offset 0xD959 11348 bytes