Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0bf5db3a8c1de1…

MALICIOUS

PDF

49.3 KB Created: 2020-08-29 04:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a25bbbd46d68fce0eb541c7f22c9b7cf SHA-1: 7f187ea1329a25ad1e889771174e3bbd9292b773 SHA-256: 8d0bf5db3a8c1de1380fb70f853bb695252801640c2893d2d6b2ee166cee4410
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains the text 'Snip on mac' and the malicious URL, suggesting a lure to trick the user into clicking the link. The presence of numerous external PDF links further indicates a link farm strategy, likely to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=snip+on+mac
    • https://static.usrfiles.com/ugd/b8c837_2e251d56313340988d39db694fd9b73b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dd1668e45fa4e5baa66a259ade62de2.pdf
    • https://static.usrfiles.com/ugd/b8c837_81e9a96334a448a7875120ca777d5510.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/wafegijiwojilevep.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/67028188887.pdf
    • https://cdn.shopify.com/s/files/1/0434/3716/2657/files/wajukakonisasena.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/xewegovuzofolekabipagopos.pdf
    • https://cdn.shopify.com/s/files/1/0436/9983/0952/files/psx_eboot_collection.pdf
    • https://static.usrfiles.com/ugd/b8c837_f035f8eec18649eebf6ec9c77deffc04.pdf
    • https://static.usrfiles.com/ugd/b8c837_78b162e72da3437086b193559b6a6bf9.pdf
    • https://static.usrfiles.com/ugd/b8c837_534f01251945428bbf863bea53b52996.pdf
    • https://static.usrfiles.com/ugd/b8c837_2bf04599d58845da978ab4e18c8ee375.pdf
    • https://static.usrfiles.com/ugd/b8c837_a496ec9dafba4540af55f577d62db32e.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_off00006dfd.bin
f6d1d5fd5568c2ff9e3ad1fc382741fc9a67c76eaaf314338d5cadf5c89adb06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFD 4876 bytes
font_01_sfnt_off00007e74.bin
0934fce35a392a158ec1c81aca8d86af30d1c9bf6901ab73ced8cada4b9ebbfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E74 10420 bytes
font_02_sfnt_off0000a23c.bin
57ddb710db4c46e909659c2af6120e047c12820e482b5ba9df346584e33ddf2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA23C 16460 bytes

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