Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa7f7f810da4e3d…

MALICIOUS

PDF

60.5 KB Created: 2020-08-10 10:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 563e94c8aa87be91a9ad9005faa5304d SHA-1: 7648e185b85ce3eac709f57c799d02a1f7165d13 SHA-256: 8aa7f7f810da4e3d6f9d5ead3610068a7babd4a58ca29d8f93f999a365db83e5
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=am+law+100+list+pdf, which is likely used to redirect the user to a further malicious destination. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering lure. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=am+law+100+list+pdf
    • http://files.lite-box-electronics.com/uploads/1/3/1/4/131406149/3365420.pdf
    • http://files.isdrc.net/uploads/1/3/1/3/131398110/kijatog_nivowinid_busixalosagatom.pdf
    • http://files.thebusybeelearningcenter.com/uploads/1/3/2/7/132740237/rarir_vefejitu.pdf
    • http://files.samosetband.com/uploads/1/3/1/3/131378975/rorokudadigaxuxik.pdf
    • http://dutaz.ldcustoms.com/uploads/1/3/1/4/131407089/cc53477498.pdf
    • https://cdn.shopify.com/s/files/1/0437/4387/1128/files/zinakosovat.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8096/files/physics_textbook_grade_10_12.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/kowufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/11762845803.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/47753411034.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/gipukupulugozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/15416996672.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/15005393667.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/79132487243.pdf
    • https://cdn.shopify.com/s/files/1/0429/5999/5033/files/metropolitan_achievement_test_kindergarten.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_off000093b4.bin
1e5334cd17979ee63f7d6a29c020a21a38b4fcf2a81462d93d4317adea678f2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x93B4 4820 bytes
font_01_sfnt_off0000a425.bin
f88c66bd7818fbb1537d649a58758f90127fb533be7560c0a419e89dfd3faa65
pdf-font-stream PDF embedded font (sfnt) at offset 0xA425 16204 bytes
font_02_sfnt_off0000d67f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD67F 4324 bytes