Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c198f5f7fa412dd…

MALICIOUS

PDF

36.0 KB Created: 2020-09-05 19:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0d2a080f0db393bb88dac6afd428df0 SHA-1: cc4610ea458b256e66fb1ca056b5b72aa4ae171f SHA-256: 2c198f5f7fa412dd5f917a2136bf1d886d37cc6d62dca43dc4ba83f767293822
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'city of ottawa recreation guide summer', suggesting a lure to trick users into clicking the malicious URL. The ML classifier also strongly indicated maliciousness.

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.me/wix?keyword=city+of+ottawa+recreation+guide+summer
    • https://static.usrfiles.com/ugd/0adedf_2673706c9d79431899a4c43685d69b67.pdf
    • https://static.usrfiles.com/ugd/f459ea_80ae81fd1ad841acb66728760d6a68ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_4641cd3f38434792bf12e4f0fd3a7cff.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9813/files/60105964666.pdf
    • https://cdn.shopify.com/s/files/1/0450/6199/6694/files/boring_machine_types.pdf
    • https://static.usrfiles.com/ugd/0c268c_222235d1d2dd425c8af204169d35206d.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_e7e2bea5d10847e4afc477f320aacc1c.pdf
    • https://static.usrfiles.com/ugd/45e30f_543c02765d464800a6a3f768600e7705.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d879c01657647f4bca53c28aa17a044.pdf
    • https://static.usrfiles.com/ugd/4117a9_1d4b5912e90b446ab19c22e331fd0c2b.pdf
    • https://static.usrfiles.com/ugd/cf14a4_e78140490dbe49c294e118338c8571bc.pdf
    • https://static.usrfiles.com/ugd/eda9ba_615e0bbae9974adf91e4fdf9e37d8c82.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_off00004e27.bin
e7d20df9a09f73a5e85b0f5de4b42992435ffcdbe31060c6935c252ff94f5a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E27 5408 bytes
font_01_sfnt_off00006091.bin
40e2d63f5887b5d4bccb053a9027940a503b03a40dd92dd2fcaa0783a197bfe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 10256 bytes

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