Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae87c93d6d239189…

MALICIOUS

PDF

55.0 KB Created: 2020-08-17 12:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a38048d1c5f6211ce328f9dac1172ecd SHA-1: c8b5478bdd7547b86661fc4d04632788682b96c9 SHA-256: ae87c93d6d239189fa88aa74fd309967a2afc84841e405603967119f8105b48f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF document contains a lure suggesting a required video helper companion application, directing users to click a link. This link, 'https://ttraff.cc/pify?keyword=video+helper+companion+application+required', leads to known malicious redirector infrastructure. The document also functions as a link farm, embedding numerous external PDF links, many of which point to benign content on Shopify, but the primary malicious intent is evident from the redirector link and the social engineering tactic.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=video+helper+companion+application+required
    • http://files.rlewislaw.net/uploads/1/3/1/0/131070294/dff6a1db47fc.pdf
    • http://dilesevi.astrologyoncall.com/uploads/1/3/0/7/130775364/8444484.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/dr_suess_clip_art.pdf
    • https://cdn.shopify.com/s/files/1/0438/6524/3813/files/maraninanilok.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/41271676574.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1157/files/build_your_self_esteem.pdf
    • https://cdn.shopify.com/s/files/1/0450/8853/8776/files/jfet_operational_amplifier.pdf
    • https://cdn.shopify.com/s/files/1/0430/8634/8450/files/92740315201.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/deductive_and_inductive_reasoning_examples.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/lowaxivenek.pdf
    • https://cdn.shopify.com/s/files/1/0428/2158/3004/files/keycodes_in_unity.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/72787994166.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7498/files/passive_voice_simple_past.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5944/files/bulletproof_web_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/44592688539.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/zelegujaze.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_off00006d51.bin
1fdc2b9166a754ec79c46bfd9421d74b7c83fa3be048d9c75d4a1cdf719cd098		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D51 14052 bytes
font_01_sfnt_off00009a52.bin
14f7952362b28b3fe8d563584a9762804ac2d818416338573e099a4f51e4dc6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A52 5224 bytes
font_02_sfnt_off0000abe9.bin
564bde7edd144e233076781a25643a031630b45ad739c389e84c046edf8e2b42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABE9 10088 bytes

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