Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f69a30b4275fd9…

MALICIOUS

PDF

44.4 KB Created: 2020-08-13 00:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 828a8c879ba0e9349b1cf9ca33bcb4b0 SHA-1: 3d67177329912a21010dd093b9a5e98496ccac3b SHA-256: 55f69a30b4275fd983bf597283f4f4f60411725f686444c7d0ddde6eebc3e329
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=4mat+learning+styles+pdf, which is likely used to direct users to a phishing or malware site. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's a wrapper for malicious links rather than legitimate 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.com/pify?keyword=4mat+learning+styles+pdf
    • http://files.simonsayskennel.com/uploads/1/3/0/8/130814411/kujofesufadanowa.pdf
    • http://files.avidduomusic.com/uploads/1/3/2/6/132695629/nuberitoxositum.pdf
    • http://files.sudburyrocksmarathon.com/uploads/1/3/1/4/131483143/0845ecd8d1de.pdf
    • http://files.bunkyechohawk.com/uploads/1/3/1/4/131453536/cbd85e0acf395f9.pdf
    • http://lupurudid.weformplastics.com/uploads/1/3/1/3/131398351/8403606.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/88779924046.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/blade_runner_putlocker.pdf
    • https://cdn.shopify.com/s/files/1/0434/8697/0021/files/68042729614.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/49810906627.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/gexatoxafoti.pdf
    • https://cdn.shopify.com/s/files/1/0431/4549/4684/files/wumovudufuvapoxulenulesu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/tunukosekus.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/54430554102.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12457093378.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/input_file_accept.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/sample_formal_letter_of_request.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/71319644818.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062d6.bin
9904bb2427688133b86a07c059efb1044e5cbf9c39035d7614fe6983430e4dbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x62D6 5132 bytes
font_01_sfnt_off00007430.bin
cd910c4e76b71c4d7c78a1f0e454a6c170a0209de887e006efcc880ca8166bd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7430 10120 bytes
font_02_sfnt_off000096b6.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x96B6 4324 bytes