Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dfa877bc6193211…

MALICIOUS

PDF

37.9 KB Created: 2020-08-01 14:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5253610f3d5a102a6cac02d0c06f959e SHA-1: b081db66e0112ee13fa4cfab461cf9667ce3e7e0 SHA-256: 9dfa877bc61932117600f53a9afb53518fd57861ff9606746b3d50eb129eeb2d
148 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.cc'. Additionally, it exhibits a PDF link farm heuristic, with many links hosted on shopify.com, though the primary redirector is the most concerning. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a visual download button lure and a callback lure suggests a social engineering attempt to trick the user into clicking the malicious link.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=form+m+1pr
    • http://files.mygirlzen.com/uploads/1/3/0/7/130776735/fapene.pdf
    • http://files.rostratanetballclub.com/uploads/1/3/1/4/131454012/7e7a69d.pdf
    • http://files.amytsaidesign.com/uploads/1/3/0/8/130813923/3548881.pdf
    • http://files.concealedwindowtinting.com/uploads/1/3/1/1/131164156/2744266.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4930/files/29564997785.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/zelevipubodekimeluju.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/zepotemevijutegidexabun.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/mevuwigelimabevomelububa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1430/6467/files/subimudoninofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/moduzibupazokemekowi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/nobevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/62107602040.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/1773817077.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/toniseko.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_off000055b0.bin
26feae521180b702f58a4d3b7fba07f589fe2d3ef7e4e4a39d6121707b99cf7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x55B0 4552 bytes
font_01_sfnt_off0000651e.bin
b1cc5ad343347763b1c2388266fc94cfc33276b1725baac2ed61e7d4d3f02689
pdf-font-stream PDF embedded font (sfnt) at offset 0x651E 10788 bytes