Malicious PDF — malware analysis report

Static analysis result for SHA-256 54589dffb870f8a8…

MALICIOUS

PDF

48.4 KB Created: 2020-08-18 15:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d983e1037c2e39a3284fe42a7e441d5a SHA-1: 49fde7e4b771543375307c92f62c35cd9de1fe95 SHA-256: 54589dffb870f8a8fc1e23f968c5894edcf97175f9fdce992aa34909970fe84b
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is further disguised within the document body as a link to academic material. This redirector likely leads to a malicious payload or phishing site. The presence of a visual download button reinforces the lure.

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=sol+marksheet+2019+3rd+year
    • http://files.pariscoc.org/uploads/1/3/1/4/131407704/wufuvevujigu-taruxo.pdf
    • http://files.ethelbustamante.net/uploads/1/3/1/4/131406356/7012749.pdf
    • http://files.oakmont85south.com/uploads/1/3/1/0/131071114/d77b0ae.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2614/files/4838663402.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/26918597096.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/kodewuzuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/exponential_equations_worksheet_answers_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/xudidemeluzunoragigokef.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3042/files/kinesafekuvikilukotonase.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/zepukosa.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/24615794412.pdf
    • https://cdn.shopify.com/s/files/1/0434/4263/4917/files/nebokonubizopukaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/56763508150.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4077/files/alphasmart_neo_manual.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f2.bin
0f4935f18f75af5f46d8bb69f82d141b1b1bf121e45aa791901a51651b281249
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F2 5616 bytes
font_01_sfnt_off000073f5.bin
c54f866859884b7dc4c680f070aced73c88026432d388f4e3a3dd97e9723967a
pdf-font-stream PDF embedded font (sfnt) at offset 0x73F5 6096 bytes
font_02_sfnt_off000083a6.bin
0af16a4b887b054ad746463e21b24e9f8220625f9d7ca31f4328ff12904b2526
pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 10180 bytes
font_03_sfnt_off0000a657.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xA657 4324 bytes