Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6c46d9d0d6d6b0…

MALICIOUS

PDF

49.4 KB Created: 2020-08-14 04:25:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9976e2e0f762d4b3a31883b27d8afcff SHA-1: e66573297902b45b800d8418c6289fa15c9113e3 SHA-256: 9f6c46d9d0d6d6b032861160b77494f33dd1d6ece0f8a41422e76d2d90c2b049
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=flight+simulator+free++mac+os+x'. This indicates an attempt to lure users to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious URL. The ML classifier strongly flagged this PDF as malicious.

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=flight+simulator+free++mac+os+x
    • http://files.jenipringle.org/uploads/1/3/2/8/132814448/jazuxodov_sabokorezuset_maraxakosoja.pdf
    • http://sofufowiz.faharwest.net/uploads/1/3/0/7/130776262/0bfe666b.pdf
    • http://files.mymichellelewis.com/uploads/1/3/1/3/131380596/getoneb.pdf
    • https://cdn.shopify.com/s/files/1/0437/1480/5914/files/aspects_of_culture_and_society.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/77953630766.pdf
    • https://cdn.shopify.com/s/files/1/0434/8166/1600/files/41814737808.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/viwebakiziwepuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/93301817372.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/26476729694.pdf
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/cancionero_cristiano_evangelico_con_acordes.pdf
    • https://cdn.shopify.com/s/files/1/0428/0467/4727/files/vimit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4414/files/81195067172.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/general_cable_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/82558903299.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_off0000833e.bin
52db5348012e8b19e5bbe0f265bb962c4ec3017f7e69417cb76728d26540456c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x833E 5320 bytes
font_01_sfnt_off00009539.bin
9de76c41ad7a7d3e86abc19602de067e167d5dbf12557cc03c860c789afff1f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9539 10420 bytes

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