Malicious PDF — malware analysis report

Static analysis result for SHA-256 f955b750e747a51f…

MALICIOUS

PDF

36.7 KB Created: 2020-08-03 20:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61df2c00048e4784956511efb3a351f0 SHA-1: 0e4f7a86b18580eb17f15a122c17e6e33b8aff4a SHA-256: f955b750e747a51fd25511a3333653c7dea55629b72157b454669161b604eb07
128 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to external PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body also contains a call-to-action phrase, reinforcing the lure. No scripts were extracted, but the presence of the redirector and link farm indicates a malicious intent to drive traffic to potentially harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=auditing+legislation+and+standards+2nd+edition+pdf+free+download
    • http://lezesu.clarecounty.net/uploads/1/3/0/8/130813577/kawovubevobufuvona.pdf
    • http://pebibej.thealibiinteriors.com/uploads/1/3/1/4/131406437/98d3e5.pdf
    • http://files.ndmbfc.com/uploads/1/3/1/4/131406607/634840.pdf
    • http://files.yanktonspecialolympics.org/uploads/1/3/1/3/131384113/ximoxutarigazak_vipegosono.pdf
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/60594597836.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/79799240404.pdf
    • https://cdn.shopify.com/s/files/1/0432/1397/9812/files/44074354443.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6791/files/vedic_astrology_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/4564132729.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/79915899064.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/gelexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/5697385800.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/dujipixunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/85077126702.pdf
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/71216413101.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/87634748792.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/91039616955.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_off00004f11.bin
25b88c147e92dc8bc61cb621a9a07b21e4275abcbf67f2e0a8315777e09c5e72
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F11 5424 bytes
font_01_sfnt_off000061a7.bin
721a2be33b9440bb18ba12de53081589531743e3ebf853bf5931a2250c3b9e3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x61A7 10368 bytes