Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d896403f98d07b…

MALICIOUS

PDF

47.4 KB Created: 2020-08-31 09:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b77618a3f7585985a8ba70de1f6026b6 SHA-1: 07d55d57055290cee9e8c4815a3ba2fb3e85487a SHA-256: b0d896403f98d07b033b4802c5c58742025fb770b01d237a16cbb2e636b1540a
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=puch+magnum+for+sale', which is flagged as malicious. This suggests the primary goal is to lure the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=puch+magnum+for+sale
    • https://static.usrfiles.com/ugd/19ce5d_7d1d9e8c8c1242959a099dab0d870566.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a3ad819ca7040918230151a692985cc.pdf
    • https://static.usrfiles.com/ugd/79cb75_2aa46b31f12d4217bfe8acadfbf5ade3.pdf
    • https://static.usrfiles.com/ugd/33a16d_03ee8738331a4347a09201d43c76787a.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/april_2020_current_affairs_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/new_canada_food_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/139_bus_schedule_nj_transit.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/basic_agronomy.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/nervio_hipogloso_funcion.pdf
    • https://static.usrfiles.com/ugd/a382ee_49b3dd350c2544c2a75e625fbc352d63.pdf
    • https://static.usrfiles.com/ugd/05900a_af6da79b612942f7b531b8e07985d262.pdf
    • https://static.usrfiles.com/ugd/b916f4_249c9b1dc5564967b07d3f4fd680046d.pdf
    • https://static.usrfiles.com/ugd/b914b5_076d5e44f1b14d188fe29fc6bad9312e.pdf
    • https://static.usrfiles.com/ugd/bae363_944a5c0f3dfa4f3bb3d5a40e45569670.pdf
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/potterton_ep3002_programmer_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/list_of_mac_addresses.pdf
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/astm_a1064_free.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_off0000798e.bin
9cb953410b6eea171cc3c057ccbc1ea32cde61e63ed5057b08514a430fd782cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x798E 5296 bytes
font_01_sfnt_off00008b68.bin
f0a14b1a5dfda8aca671e546f5f96040ec36fe5654b687d28ea157f306f7b222
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B68 10948 bytes