Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d89dfe3999c0b34…

MALICIOUS

PDF

44.5 KB Created: 2020-08-07 12:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb280158685eeac8a626b39806f61a23 SHA-1: 57cc98919d09f668aa5de81996a7b2a4c29ed68b SHA-256: 3d89dfe3999c0b34dd4e679b08c2f14a017f8d7d9f1573788ca8a58160eecd99
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains references to the redirector URL and a large number of other PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The presence of a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK strongly indicates the intent to redirect the user to a harmful site.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=manual+cinema+4d+r20+espa%25C3%25B1ol+pdf
    • http://files.flipmyfloridayard.com/uploads/1/3/2/6/132681812/43889.pdf
    • http://files.thenewblendworthcentre.com/uploads/1/3/2/6/132682167/vevirukemiluwok_rositelezebixu_sofumubuxop.pdf
    • http://files.kwongwingkwan.com/uploads/1/3/0/7/130776081/7602496.pdf
    • http://files.catcatblog.com/uploads/1/3/1/3/131379899/sawugedada.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/mobodenitekewuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/61795337942.pdf
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/four_five_seconds_karaoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/1493563034.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/45407539724.pdf
    • https://cdn.shopify.com/s/files/1/0435/4880/3227/files/21910681928.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/supply_chain_management_in_airline_industry.pdf
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/kifukajalameji.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/2559767103.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/pumikej.pdf
    • https://cdn.shopify.com/s/files/1/0436/0237/8915/files/zotapiwipupuveno.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/2465816919.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_off00005e4d.bin
5c8ce053674138b26c742fb08c873334dbf42af59d115025b7f97cdbf689aa8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4D 3776 bytes
font_01_sfnt_off00006bdc.bin
4b47b680c72c176f611a436242abcec5a668168d65a916046d36ce4cc4cf03d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDC 5880 bytes
font_02_sfnt_off00007f99.bin
0a74b23f6c6d8443907ca7ca12fc9cd9ec5b918f8501853cd088b5d7ff16ce37
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F99 10272 bytes