Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a9f73bc4e6c92f…

MALICIOUS

PDF

42.5 KB Created: 2020-09-02 13:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b872bbf41e8d350022309300a8be767 SHA-1: d738dc16238c4485f42114493de1b4a626a4b49a SHA-256: 89a9f73bc4e6c92f4df9fdc3dab4960d757b503dc7c2bff90cceaa5f6d0e8de2
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, specifically pointing to 'https://ttraff.cc/wix?keyword=armed+heist+game+apk'. This URL is embedded within the document's body, suggesting a social engineering lure to entice users to click. The presence of a link farm heuristic further indicates a malicious intent to distribute content or redirect users to potentially harmful sites. The primary attack pattern involves tricking the user into navigating to a malicious URL.

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=armed+heist+game+apk
    • https://static.usrfiles.com/ugd/58a813_3f8b1657c88c4cd99350be08fe56e123.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fe4806c12d940f59fa3b05f91102399.pdf
    • https://static.usrfiles.com/ugd/98e298_67e52138da664486a28343231b6a834c.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/baby_photo_frames_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/8100/6246/files/china_embassy_in_bangladesh_visa_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/9397/3405/files/tadediteweraxetuwikewuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/52331678632.pdf
    • https://static.usrfiles.com/ugd/b8c837_40f6f4ca71f74898a515a2598ec36831.pdf
    • https://static.usrfiles.com/ugd/ea2c45_2ffc285d3e4142329b68f2773d07d240.pdf
    • https://static.usrfiles.com/ugd/1a89c8_083071b347cf49d0892b9f2c0a068e42.pdf
    • https://static.usrfiles.com/ugd/96bf9d_33c2eedfdad8422bb979aa59b31c39e8.pdf
    • https://static.usrfiles.com/ugd/3aca14_423d71e31fa8445f9b2b97f37fde3026.pdf
    • https://static.usrfiles.com/ugd/7a7fb1_9f0ba59634844cdb935aa68d5f6b8e5c.pdf
    • https://static.usrfiles.com/ugd/3e87bf_0f1113a84f8e48ea831dda35874f881c.pdf
    • https://static.usrfiles.com/ugd/69b86f_fe9e1c49ae8a4f20aa8503d8ab47081e.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_off00006685.bin
78d8a643f1662904a06280db763e0ced9241d24ff1dd64d5896a966ae25a043f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 5392 bytes
font_01_sfnt_off000078ae.bin
dbb20c86c43a2911562a1a83b261fb966dcefc161a0150abd46e1378d4820886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AE 10664 bytes

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