Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb2cc020e24080c…

MALICIOUS

PDF

51.1 KB Created: 2020-08-21 03:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aba14213426d1bfa77f5612a7e498cac SHA-1: d709f44a8a83f412b025d5e755197fe1cb94c884 SHA-256: ebb2cc020e24080cd6e477040f74e322d370aab3ced9ac3d17486fc6061ab020
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com, but one critical link directs to a known malicious redirector at ttraff.cc. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is the primary indicator of compromise.

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/pify?keyword=werewolf+transformation+games+online+for+free
    • http://lorato.southernarizonabds.org/uploads/1/3/1/6/131606140/nanoranud_gosuxivofaxus_wuviwetad_wagomajadapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8458/6909/files/checkpoint_ccsa_r80_dumps.pdf
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/48278418879.pdf
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/72484527363.pdf
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/gaxorefunirakukisijipevu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/les_acariens_du_sol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0124/0985/files/iit_automobile_engineering_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/19277703948.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/injustice_gods_among_us_hack_game.pdf
    • https://cdn.shopify.com/s/files/1/0439/2848/6056/files/68431515629.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_off00007cf6.bin
3dc92fa872e408c9cd61edc1da90829c2685120df78612d55cc9cf1f1e77e1b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF6 4980 bytes
font_01_sfnt_off00008dda.bin
bd39bc4e6b8c81002b5b5647a77c5aa60953511e7a57243cb1498319591b1789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDA 10388 bytes
font_02_sfnt_off0000b163.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB163 4324 bytes

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