Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb7fa9d4b58a0b7…

MALICIOUS

PDF

57.8 KB Created: 2020-08-30 08:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bae06062c362e7bc9f6de60782fe0d30 SHA-1: 58e82c6158ed268069c52fcd37d268750e2d032a SHA-256: eeb7fa9d4b58a0b73e002c779e2b51a023856c597b33cc0b4a0c9b61860d1010
150 Risk Score

Malware Insights

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

This PDF file contains a malicious redirector link disguised as a download for 'Nba2k16 soundtrack download'. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic fired, pointing to ttraff.cc. The PDF also hosts a large number of external links, many of which point to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the true 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=nba2k16+soundtrack+download
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/kifizuwatezodeketavaxotes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/fobuwelegivawurifip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/4658629884.pdf
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/30305621725.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/android_apps_not_through_google_play.pdf
    • https://cdn.shopify.com/s/files/1/0435/9172/9309/files/calvinistas_e_arminianos.pdf
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/rosetta_stone_spanish_tpb.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/lugodeludidadiboxosur.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3123/files/tibemu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/91624010605.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/vudinewivago.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3062/files/chordates_mcqs_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6758/0317/files/wuzefafanuxazoridenep.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/70421717659.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4350/files/jixazirenedokitagagutuso.pdf
    • https://cdn.shopify.com/s/files/1/0428/5241/7703/files/pomikeribop.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_off0000a3fe.bin
2b2fdc51d521661b300c79b4826c61c9953d99b613a436557c0168aecadc2c29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3FE 5536 bytes
font_01_sfnt_off0000b6ee.bin
012d6a34462c7ab558f61cd6e51763e23ae05ac5a2df0f53b90039af85321bdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6EE 10348 bytes

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