Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba998ba877b6f99…

MALICIOUS

PDF

50.1 KB Created: 2020-09-07 12:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ac629b441cbb7cd8b5b055551d94ec SHA-1: 70f96479b1f60a46b5941bb7cb14ffa99a2d6567 SHA-256: aba998ba877b6f9983cd5d672549b8b697e69893e69d4621f0190bcf9c58fb87
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning or redirecting users to malicious sites. One of the embedded URLs, 'https://ttraff.club/wix?keyword=frida+android+ssl+pinning+bypass', was flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The file's structure and the presence of numerous external links suggest it is designed to drive traffic to potentially harmful destinations.

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.club/wix?keyword=frida+android+ssl+pinning+bypass
    • https://static.usrfiles.com/ugd/b8c837_5ec583582eae49569bdf6e18df63502b.pdf
    • https://static.usrfiles.com/ugd/c0fca2_e14e7a87a62641b8a08f45940b988fef.pdf
    • https://static.usrfiles.com/ugd/49be48_2a45f293d719410f943e9a1b6645d6f2.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_fd37893f1ba247e59922c5937cde55c6.pdf
    • https://static.usrfiles.com/ugd/a01749_a9e19bf18c394ef3a7a1c0fd666fa264.pdf
    • https://cdn.shopify.com/s/files/1/0431/2979/8818/files/noboxelinibobura.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/ccna_full_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/1994_mazda_b4000.pdf
    • https://cdn.shopify.com/s/files/1/0433/8378/3575/files/95522600531.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/gobapopuwe.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/
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/ccna_full_tutorial

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070da.bin
d836d1fc07f166f3551d6469bed3966f6375ea558be0111a2bb8ef012de1f922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DA 5324 bytes
font_01_sfnt_off00008303.bin
3c627da961542bfdbed2f934e6c57a0ee1a857bcc7205f3f3d20eb6f0369cf9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8303 10128 bytes
font_02_sfnt_off0000a5e9.bin
9cb0650af5bdb2e8593988a361a40fe1030b61ea25d8fce7fab67310e0b1f9a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E9 16352 bytes

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