PDF malware analysis — malicious · e198742ba54a9bef

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 06:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 58f7d49a343fe0bc0b56e354043df880 SHA-1: 298863b991c41026ffe4c09269070222e04699a4 SHA-256: e198742ba54a9bef98fe1fc25cfff5f8599c372ca80da9479c28fa3a25dbab69

120 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, many of which point to benign content farms. However, one critical heuristic identified a link to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same URL and a title suggesting an educational worksheet, indicating a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=speed+velocity+and+acceleration+worksheet+igcse
- https://cdn.shopify.com/s/files/1/0429/4646/1855/files/tropism_in_plants_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0438/3634/2434/files/selivakug.pdf
- https://cdn.shopify.com/s/files/1/0429/4138/2812/files/84143656189.pdf
- https://cdn.shopify.com/s/files/1/0438/8575/6568/files/kenmore_elite_he5_dryer_f01_error.pdf
- https://cdn.shopify.com/s/files/1/0434/1088/2727/files/bbc_iplayer_free_for_android.pdf
- https://static.usrfiles.com/ugd/41a0b6_a37abec3a4a64826b4dabd23c8113737.pdf
- https://static.usrfiles.com/ugd/b8c837_40fac45572904770b6423b61e4f8c578.pdf
- https://static.usrfiles.com/ugd/b8c837_d422ec1068354474a274f0a8a3d3554d.pdf
- https://static.usrfiles.com/ugd/3b0c81_5fbae0e75f814755aabbe198bb9c62cd.pdf
- https://static.usrfiles.com/ugd/2ca09c_0ef4e670d99a4711a77b39ee4d51d686.pdf
- https://static.usrfiles.com/ugd/b8c837_fc64a79bd1e343d5a31e14258736a2f3.pdf
- https://static.usrfiles.com/ugd/5438e3_2d6a5eabbdf14591a8b5cfbc2b00cbea.pdf
- https://static.usrfiles.com/ugd/a771bd_6679f03e30a94a3c8a063e41ccdfa141.pdf
- https://static.usrfiles.com/ugd/bdeb4c_3ad6908246574179be1bafa955647c6a.pdf
- https://static.usrfiles.com/ugd/39cb9d_2443cfe8757c462b8362c7964ac77f20.pdf
- https://static.usrfiles.com/ugd/df4650_d3d3a9a8e803457a9d40998fb05ff0ef.pdf
- https://static.usrfiles.com/ugd/b8c837_4e7b5ca34de4477683cca469eae79e17.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005bef.bin` `dcb7194bddd41fd2005663b2b8821c2fb69366111823e24ded50c704298736f6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BEF	5756 bytes
`font_01_sfnt_off00006f9c.bin` `ba82c96a942cc92d6d2fdf22290d3150c91851b234f71be7dcbbeb4b465e8a31`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F9C	10188 bytes

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