Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c9087248ac6f23…

MALICIOUS

PDF

48.3 KB Created: 2020-07-31 20:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b3c26c9ef501d0b91c63d6cef8f3732 SHA-1: e2251f6f74bb91e1f7b12a024cb75db0faa25703 SHA-256: 40c9087248ac6f2317264481cc042d3a4a636b4dcbca6b0cb2054941265e3e91
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sister+souljah+a+deeper+love+inside+pdf'. Additionally, it features a large number of external PDF links, many of which are hosted on Shopify domains but some point to unknown domains. The document body contains garbled text but includes the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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.cc/pify?keyword=sister+souljah+a+deeper+love+inside+pdf
    • http://files.confeybiol.com/uploads/1/3/1/3/131398187/1256364.pdf
    • http://files.tuckahoemc.com/uploads/1/3/1/6/131606227/4643530.pdf
    • http://files.keepingthefaithal.org/uploads/1/3/0/7/130775505/a84428c.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/85283849500.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/vodikusulovazemofo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/60266605126.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/vonopok.pdf
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/82919154793.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/jopubomoxakezawuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/wotuxokubidotafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/wikejibub.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/kajib.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/2312077498.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/kewutilexuvup.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/17938179839.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/faxefu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/3275414595.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_off00006947.bin
461baa28d0dcd0d885aa8381777b4c3f224df5023622d44ce792d825bea0eea3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 5368 bytes
font_01_sfnt_off00007b8d.bin
20ff92a19865e53da4030005e32e6b2277e2abe9e714a0b32f3bd713195fbbe8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8D 10356 bytes
font_02_sfnt_off00009f24.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F24 16092 bytes