Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67914748b733c3e…

MALICIOUS

PDF

45.4 KB Created: 2020-08-03 16:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1c8c0e895315ac3fb1f1e1273de1099 SHA-1: 5e221df7123167c3786837b79c6f156722a311e0 SHA-256: f67914748b733c3e4400eb71bdce697f278519f6a9f1b2043f99c692b200878e
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a 'Project budget template pdf'. This link redirects to a known malicious URL, ttraff.ru, which is likely part of a link farm designed to distribute malware or phish for credentials. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting an attempt to obscure the malicious redirector or leverage legitimate platforms for distribution. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=project+budget+template+pdf
    • http://kugex.makeupbymaricris.com/uploads/1/3/1/3/131380158/3757e.pdf
    • http://files.creativelyyourscustomcakes.com/uploads/1/3/0/9/130969435/xesagexutabitolamowo.pdf
    • http://files.homestylethreads.com/uploads/1/3/0/7/130776276/lonadigexametuvodof.pdf
    • http://files.artxonhudson.com/uploads/1/3/0/7/130775154/9cb489.pdf
    • http://files.ghs1988.com/uploads/1/3/2/6/132695438/5cd2ecf39811742.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/vemevozebesorezumojudow.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/1334164548.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6351/files/jasujavafibiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/44895971802.pdf
    • https://cdn.shopify.com/s/files/1/0433/7411/7015/files/83787103519.pdf
    • https://cdn.shopify.com/s/files/1/0430/4083/3690/files/tatudanedas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7478/9281/files/82054071805.pdf
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/xeduxodoturulojibubiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/mupulasizojajujesuzido.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/9064965432.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/why_won_t_my_discord_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/saw_8_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/42247666916.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_off0000724a.bin
05a8fdfcaa1ed4fbc77f307292da8b69a32c44fd7e81cc7f5ac4bf035861fdb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x724A 5512 bytes
font_01_sfnt_off000084f2.bin
fe2cf37cda339209e13b633fbb51fc6d840bd542aa3e6b790f9c29ea454d1d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x84F2 10492 bytes