Malicious PDF — malware analysis report

Static analysis result for SHA-256 7742e66f9efa2504…

MALICIOUS

PDF

43.3 KB Created: 2020-08-06 14:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 277cfa10f55a10fa6c1f3d79e1bec2a1 SHA-1: 68fbfb01be459dfdf6b483c21936eb1ef842758b SHA-256: 7742e66f9efa25045fa215314a4f1d868f2417868ab31ecf1990e3fd6489f537
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains the same URL, presented as a download for a stylebook, and a large number of other embedded links, many hosted on Shopify. This indicates a link farm or redirection scheme designed to lure users to malicious sites. The presence of a 'download button' heuristic further supports this social engineering tactic.

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.com/pify?keyword=associated+press+stylebook+pdf+download
    • http://files.krshairandwaxstudio.com/uploads/1/3/0/7/130775784/simajefebakegu.pdf
    • http://files.lickcream.com/uploads/1/3/1/4/131483491/1345596.pdf
    • http://files.mosaicsbyvirgene.com/uploads/1/3/0/7/130739697/9139705.pdf
    • http://files.josephbrowne.net/uploads/1/3/1/4/131437246/wijegopulok.pdf
    • http://files.hanisthegroomer.com/uploads/1/3/1/4/131438260/rutiti.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/xinotanodubapo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3389/2763/files/46510537142.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6634/files/lobesokez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/oregon_trail_game_download_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/types_of_editorial_writing.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/13216491884.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/gimudijol.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/71176851745.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/fokisonoxojagavujetewavu.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_off00006a10.bin
fb7cb7c673abe943b3a64ec51687847a23a68e498d16a9761b4408caf4f06cae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A10 5536 bytes
font_01_sfnt_off00007d0d.bin
897035fe3eb5ea45d50661974878683e7a13ba6598fb9ff44c8a89d684378bc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0D 10396 bytes