Malicious PDF — malware analysis report

Static analysis result for SHA-256 c728765fa4956444…

MALICIOUS

PDF

40.6 KB Created: 2020-08-30 00:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bf2df69bd9a4a531a6e92725da8ea4f SHA-1: b81f6058dd2f8e6f6a2f9a472edf4e3cb846d7ac SHA-256: c728765fa495644405185ac13722bf04bbbc90471deb43fd73ba28c98274ac56
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=military+survival+manual'. This URL is presented within the document body, suggesting a lure to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The primary malicious URL is the highest priority IOC.

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.cc/wix?keyword=military+survival+manual
    • https://cdn.shopify.com/s/files/1/0434/6655/5549/files/nerawi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2363/7399/files/autocad_architecture_2017_student_version.pdf
    • https://cdn.shopify.com/s/files/1/0434/4931/9577/files/slope_stability_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/mipisagodedis.pdf
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/29506726903.pdf
    • https://cdn.shopify.com/s/files/1/0466/4459/2805/files/32096677593.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/61023837757.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/jarifelojukapezem.pdf
    • https://cdn.shopify.com/s/files/1/0461/6948/9560/files/cittadinanza_digitale.pdf
    • https://static.usrfiles.com/ugd/e3ff21_8e99d84d5a5a4c34b67d0df2e832daf7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c60f0e16c4c7435696cc43e21fbc263b.pdf
    • https://static.usrfiles.com/ugd/3bca44_ce4728dfe27445fd90ca3692c7348c5a.pdf
    • https://cdn.shopify.com/s/files/1/0432/8525/0216/files/61887867764.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/bryant_evolution_thermostat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.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_off000062ad.bin
66bf1ffda474554d0d8b1eac2331807d839c4daaf4890e9965bbcf8040d5bccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AD 4996 bytes
font_01_sfnt_off000073a6.bin
6e8e241e9841a1500ce86bccc3d9bd8717828811b54466ca5b6d4840b8861b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A6 10008 bytes

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