Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7c6f114447e1f6…

MALICIOUS

PDF

53.7 KB Created: 2020-09-19 01:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61131220a4c335821a17e51fbfd0e737 SHA-1: 533798ec15bf57ee9ed12e404060fb9269bf7206 SHA-256: 3d7c6f114447e1f633daf84fb4e95ba5fdb13c1d1b55c0901d5e8271e2b195c1
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to redirectors or unknown URLs. One prominent URL, https://ttraff.club/wix?keyword=rar+apk+download+old+version, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of numerous PDF links and a malicious redirector indicates a phishing or social engineering attempt to direct users to malicious content.

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.club/wix?keyword=rar+apk+download+old+version
    • http://purimipom.johnpielli.com/uploads/1/3/0/7/130739967/0881da29f20bb3.pdf
    • http://jazulak.shirleymurdocklifesongs.com/uploads/1/3/1/3/131380284/78fd2a.pdf
    • http://metetot.brunyislandseafood.net/uploads/1/3/0/7/130739564/1903515.pdf
    • http://files.vegasvowsforfree.com/uploads/1/3/1/3/131384432/770c15.pdf
    • http://ketaw.plantedparenting.com.au/uploads/1/3/1/4/131412290/nuwored_nuxefu.pdf
    • https://d4119e3d-4693-45fa-a6d3-5bbd5cef8c4a.filesusr.com/ugd/eb6612_2d05cb8c850f40bbb6071b1366bff636.pdf?index=true
    • https://70e55933-4ae0-4a4d-9f01-06d9931e4f92.filesusr.com/ugd/9421c8_141eaa0cb0a34b8d928b7c23515ca8b8.pdf?index=true
    • https://89adcae0-f77e-43a9-981d-f13055f91da0.filesusr.com/ugd/06497e_76d49e71a291453096481fbc216182a6.pdf?index=true
    • https://d959f8d9-8d77-4851-8009-d72eb91d17d9.filesusr.com/ugd/cafc24_70cd76e4d7ab4189bbd1056d21372150.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0454/8824/2838/files/ralulevutizikopebovemiwab.pdf
    • https://cdn.shopify.com/s/files/1/0463/5338/3581/files/essential_cell_biology_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/zeta_psi_pledge_manual.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b4.bin
d6c49a70f0cbeec20d8d2fb44bb5ce165b1364ce636e869ecd66dd6ca0a255b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 4884 bytes
font_01_sfnt_off00007271.bin
b251d3adcc17c17525c73b25692fab509439c544ce7f07a49330a647bdefd502
pdf-font-stream PDF embedded font (sfnt) at offset 0x7271 15676 bytes
font_02_sfnt_off0000a46b.bin
2971edd002e0b824ea6f6d3950fee50ed15f06f051d459e871ee757c8a57b62a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA46B 16180 bytes
font_03_sfnt_off0000b9a4.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9A4 4324 bytes