Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f510ea7d343b83…

MALICIOUS

PDF

39.1 KB Created: 2020-08-23 10:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 703469b66b1cfbc8c9dd09c34a3f4de0 SHA-1: 5ee20de223c3bac23cd078d1eba38dc130802b09 SHA-256: 96f510ea7d343b8364cd056f7be86626044beaec47f9a066f039f3fe9949125b
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to employment verification, aiming to trick the user into clicking a link. The primary link identified, 'https://ttraff.com/pify?keyword=atlanta+public+schools+employment+verification+form', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded links to PDF files, many hosted on Shopify. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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=atlanta+public+schools+employment+verification+form
    • http://files.heanyoutloud.com/uploads/1/3/2/6/132695336/8662832.pdf
    • http://files.danmessisco.com/uploads/1/3/2/6/132696210/1366413.pdf
    • http://files.ninatongthaispa.com/uploads/1/3/0/7/130775310/debekemaridikige.pdf
    • http://files.marburgshowsociety.com.au/uploads/1/3/1/3/131380870/5259b9c12e04de.pdf
    • http://files.giovannisdesigns.com/uploads/1/3/2/8/132814096/33e54d02cf7.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/83851008540.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/54736613114.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/xizawugusasodonevowex.pdf
    • https://cdn.shopify.com/s/files/1/0462/6061/7365/files/active_directory_explorer_sysinternals.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2166/files/14911145074.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/wow_classic_leatherworking_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7113/4106/files/jafivit.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/54028528025.pdf
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/ceh_v10_certified_ethical_hacker_version_9_study_guide.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_off0000582a.bin
e424291488cd6b5f91ddec9dd45012002712548e4569b05a0a08d7106a9a8014
pdf-font-stream PDF embedded font (sfnt) at offset 0x582A 5548 bytes
font_01_sfnt_off00006ad9.bin
25c07a0cfc0aa1271e72e96ec82260f56fa722290ca02ede68a97c1c44a7b22a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD9 10640 bytes