PDF malware analysis — malicious · e7bc18b3170cbefa

MALICIOUS

PDF

37.9 KB Created: 2020-09-09 01:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c87a74afaf25639361cbe5f613f8b395 SHA-1: 69f1da6336e0ecd9d4af95622c843817785826df SHA-256: e7bc18b3170cbefa029c0a3766a328e376a4306e566a023fb740b9975005dcd9

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. This URL is presented within the document body, disguised as a link to academic content. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to 'static.usrfiles.com'. The primary malicious URL is likely intended to redirect the user to a phishing or malware distribution site.

Heuristics 4

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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.club/wix?keyword=mathematics+in+the+modern+world+pdf+cengage
- https://static.usrfiles.com/ugd/39d081_f90e6f4c67c94f1187b55a516f8adbed.pdf
- https://static.usrfiles.com/ugd/b8c837_cc272b27e15f4de58af9a9a24f09f596.pdf
- https://static.usrfiles.com/ugd/c8683e_600724b62b7942cb8858f97d3d12e6f4.pdf
- https://static.usrfiles.com/ugd/bf57b5_f2ea8ae9dc8f471293d8b44ea60f8870.pdf
- https://static.usrfiles.com/ugd/79e5df_0c5208024b884122abcbe0b6b5da8a6a.pdf
- https://static.usrfiles.com/ugd/5ed537_e8d6876678234d4bbabecc6847e075c0.pdf
- https://cdn.shopify.com/s/files/1/0432/9675/1774/files/68814955883.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.pdf
- https://cdn.shopify.com/s/files/1/0440/2990/2998/files/gmade_komodo_manual.pdf
- https://cdn.shopify.com/s/files/1/0435/1285/6731/files/high_hikers_guide_to_the_galaxy.pdf
- https://cdn.shopify.com/s/files/1/0432/5117/1478/files/finitexoxikovijipibazik.pdf
- https://static.usrfiles.com/ugd/e3ed1f_dcccb6cdaff04fe8ac0f15cbb8d9ad6e.pdf
- https://static.usrfiles.com/ugd/07ef24_f567940a81184f1ebe0503195bbd4735.pdf
- https://static.usrfiles.com/ugd/3fb742_c927dc210a5c460e931e6feb80be59a5.pdf
- https://static.usrfiles.com/ugd/13ae68_f6e4b80944594db883c932ef8105b6f8.pdf
- https://static.usrfiles.com/ugd/34e21e_192dadb46a274f65b0ee1de9c3dbf6d2.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_off000053e8.bin` `073a9077e285878d3099dd0075b845a103c1e85cd470647f014dcf271335e469`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x53E8	5668 bytes
`font_01_sfnt_off0000672a.bin` `b3ba7d896937441d0c3a38461d9919cf8e398e18850782047aa45fd1c59eab9a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x672A	10340 bytes

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