Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6c4ed2abb5f6a2…

MALICIOUS

PDF

41.7 KB Created: 2020-08-21 08:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98b95b73a8d050c59f96d2caa27a42f8 SHA-1: b6b608b830a22670787317bc7ed73c1eda4a488b SHA-256: 4d6c4ed2abb5f6a2ec42cb4d8fc2209f74a9b9a6a82dffbca2365c5d8c6805b4
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=capesize+market+report', suggesting a lure related to a market report to entice clicks. The ML classifier also 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.com/pify?keyword=capesize+market+report
    • http://files.henrikbechseeberg.com/uploads/1/3/1/1/131163578/supaj-rutubiforol.pdf
    • http://wogoban.organicnaturopathicservices.com/uploads/1/3/0/7/130739278/sifaguguzisax-vewopor-nafunoluluxoxe.pdf
    • http://pobube.jalbrightclassroom.com/uploads/1/3/1/4/131453194/tezajedegaxika-zixutalid.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/2608314516.pdf
    • https://cdn.shopify.com/s/files/1/0437/1451/1001/files/bloqueo_av_grados.pdf
    • https://cdn.shopify.com/s/files/1/0432/6182/1092/files/76160220225.pdf
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/jopuvide.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/palita.pdf
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/69364876831.pdf
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/11056749240.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/87571849246.pdf
    • https://cdn.shopify.com/s/files/1/0430/9080/4885/files/gadefokukumoko.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/sumulol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/27486352753.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_off0000649d.bin
d436efb14a7e84d07d250bb82426e4427f7fe0b28c1b40c78700269943adf7ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649D 4952 bytes
font_01_sfnt_off00007566.bin
dfb8031ade016bf1ec5d4bf8ef290ee46ca775795ff9d78f46d0637758d4ea5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7566 10436 bytes

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