Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c985476fc9020da…

MALICIOUS

PDF

45.3 KB Created: 2020-08-31 19:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 612784d0f310778125e32746d5e123f1 SHA-1: de38f6e95af5361845aae582bc2b0194de3c65d9 SHA-256: 2c985476fc9020da633365e268b3907c3d4bc5dcf184048928894047a8617db2
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'gestational diabetes treatment guideline' and the malicious URL. This suggests a phishing or scam attempt designed to redirect users to malicious infrastructure.

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=gestational+diabetes+treatment+guideline
    • https://cdn.shopify.com/s/files/1/0435/3707/2280/files/new_us_army_combat_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/84854748581.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/tetugasizutijezake.pdf
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/nergie_fossile_dfinition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/adversus_haereses_san_ireneo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8308/8547/files/5893109254.pdf
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/causas_personales_del_bullying.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/duralarudik.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/tifif.pdf
    • https://static.usrfiles.com/ugd/34e21e_5ac9edf97401407b9e263111e91ac3fb.pdf
    • https://static.usrfiles.com/ugd/cb4a18_4fcdedda1a9748e78c09b2a2a06a33b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bda2b2792294a46a4d80023fb5bdc56.pdf
    • https://static.usrfiles.com/ugd/756799_c239c6d883f243ad953bbc02af68fa05.pdf
    • https://static.usrfiles.com/ugd/b3bc21_7288f5e8120c4c78a69a6beeb902aa0e.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_off00007445.bin
b87aa3a4c42d4e979691d6cdfc731fe2a06322f6c207286351b9b6689bd703fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 5316 bytes
font_01_sfnt_off0000863e.bin
d4fd09f5b0e901ad05ec00c924e31aadf6f112441ec07ca32ae1e9cd5e9c9369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x863E 10104 bytes

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