Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87fb98c7903d878…

MALICIOUS

PDF

35.3 KB Created: 2020-08-30 04:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a45784a8972ae717506c530988c5810a SHA-1: f257a45342d5a0e131b38868756b7690b32124a9 SHA-256: a87fb98c7903d87806ee2e4d2f512f716bd77f8f27691dde34b206cd1f69c115
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to 'ttraff.ru', which is associated with known malicious infrastructure. The document body and embedded links suggest a lure to download content, likely leading to further malicious activity. The presence of a visual download button heuristic further supports this phishing-like lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=revenge+of+the+dreamers+2+download+z
    • https://cdn.shopify.com/s/files/1/0435/5093/3143/files/lol_cowsep_master_yi_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/blind_2014_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/gomixapokuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/1337196262.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4940/files/20183812326.pdf
    • https://cdn.shopify.com/s/files/1/0432/6273/8592/files/bleach_brave_souls_beginner_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/manualidades_con_reciclaje_para_nios.pdf
    • https://cdn.shopify.com/s/files/1/0440/6696/3621/files/vegilubafisujivexefeforen.pdf
    • https://static.usrfiles.com/ugd/1849a1_622c59652d1242ed83872b19de9c7a21.pdf
    • https://static.usrfiles.com/ugd/f09a9d_fa50da5fe3d446908524664c4055fa17.pdf
    • https://static.usrfiles.com/ugd/43d598_3c9cb2b51d574aafa3e85fd47bb60127.pdf
    • https://static.usrfiles.com/ugd/eda9ba_0aa6aa181ee247ca8156d711b1282faa.pdf
    • https://static.usrfiles.com/ugd/b8c837_da91eb6cea424e249b9b5cf871653045.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_off0000497f.bin
f692d314bdb75fed74dd9f54013c40adf0d15bf47e2402b7ebdce6cd5600e692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x497F 5660 bytes
font_01_sfnt_off00005cb7.bin
2707a143cf1e167b3e849d6278a390453091dcc269fe063b6800ebbef6df2636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 10560 bytes

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