Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ff72b60686e508…

MALICIOUS

PDF

33.9 KB Created: 2020-08-05 13:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7167c506a695effec670856a0417efbf SHA-1: 2956c52f3ec5a9a2fe5d45943d0fbf8c3d70c783 SHA-256: 55ff72b60686e5084684273ad5477f80e3825d2d7794fffa6020d77af6f8b19a
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links, a significant portion of which lead to a redirector service at 'ttraff.ru'. This suggests a phishing or scam campaign aiming to lure users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify, indicating a link farm strategy. 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.ru/pify?keyword=english+test+basic+pdf
    • http://files.amomentonthelips.co.uk/uploads/1/3/0/9/130969700/wekosinuxolo.pdf
    • http://files.yourspeechroom.com/uploads/1/3/0/7/130740551/d279e4639f83d8.pdf
    • http://files.angiecoyle.com/uploads/1/3/1/6/131606169/0329169d16a2.pdf
    • http://files.thehappymeetium.com/uploads/1/3/1/4/131453455/rutafapedov-ropogoradike-doxezajabe-bezipupi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/38050023670.pdf
    • https://cdn.shopify.com/s/files/1/0440/2819/9062/files/45390285998.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarozasupevukofapunaxovu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/99022928869.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5523/files/40339364778.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/91384984063.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/35634316375.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/36466212911.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/dekarepuwozewiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/3404793926.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_off000047dc.bin
c28303622bdb622c0b324f16d4955e9edda78be14eefd79a20467702657a9154		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47DC 5420 bytes
font_01_sfnt_off00005a4b.bin
f1821937d3ad4667c05aa79a6a651d647393f71ba831914ee00182c8391e295f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4B 9544 bytes

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