Malicious PDF — malware analysis report

Static analysis result for SHA-256 9733e7f171a9e296…

MALICIOUS

PDF

34.1 KB Created: 2020-08-18 18:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7608faad90388dac2846611c44433a14 SHA-1: b2dd08cc5fb750b523369c91adc69e26aca4ec8b SHA-256: 9733e7f171a9e296096e95fd6d0fc59a33d3facaed6e649e775b5fb5441e27b4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.ru/pify?keyword=bhoothnath+returns+3gp+video+songs, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same media title, suggesting a lure to trick users into clicking the malicious links. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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=bhoothnath+returns+3gp+video+songs
    • http://sifezeb.onwardcatholicsoldier.com/uploads/1/3/2/6/132681670/xudowukalevaxabe.pdf
    • http://files.sagewindowcleaning.com/uploads/1/3/1/3/131381021/jekafurizefowa.pdf
    • http://komuv.pebblehurst.com/uploads/1/3/1/3/131383936/7231223.pdf
    • http://wigugo.tortugamobile.com/uploads/1/3/1/6/131606598/xomikonowofor_lisuduviz.pdf
    • http://xekug.deanalegassick.com/uploads/1/3/1/1/131163559/tedorinupagixefi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/65606490318.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/2034672483.pdf
    • https://cdn.shopify.com/s/files/1/0437/4626/3201/files/jakukasapuzaziwuri.pdf
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/servants_of_the_servant_a_biblical_theology_of_leadership.pdf
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/6902603980.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/bollywood_new_movie_song_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/88753755785.pdf
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/bakoseziwedero.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedifoniwupub.pdf
    • https://cdn.shopify.com/s/files/1/0432/1463/5171/files/10336289357.pdf
    • https://cdn.shopify.com/s/files/1/0439/0528/6296/files/64228118004.pdf
    • https://cdn.shopify.com/s/files/1/0440/9737/2312/files/10482792601.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_off00004806.bin
5953edae15b07b1ae6b3f56a078c2020494c8d80978fda8a505feb9f96e8cf1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4806 5460 bytes
font_01_sfnt_off00005a91.bin
b35076d45d0aaed0d965472cc327feb386504edc97f623dff44eeef40d432aed
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A91 9620 bytes