PDF malware analysis — malicious · 4299b934b68afb3e

MALICIOUS

PDF

45.0 KB Created: 2020-09-06 07:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b468b560f6a3818c3c911a1d75db1321 SHA-1: d7ad2c1e90e3dfe9ef411964e8c9a9ea4e868969 SHA-256: 4299b934b68afb3e5588cf8788ff0e0a9a5351b4329fe79d5d305a4523e5b0ca

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=free+event+program+template+word'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many pointing to 'static.usrfiles.com', suggests a link farm or SEO poisoning tactic to increase visibility and lure unsuspecting users. 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.me/wix?keyword=free+event+program+template+word
- https://static.usrfiles.com/ugd/10cedf_48a32ba6a8f141a7a5ead6236a34efdb.pdf
- https://static.usrfiles.com/ugd/e6e573_ab8fde28a0ee4d7da9d4ca7cf053fa97.pdf
- https://static.usrfiles.com/ugd/ae15ca_599ce784cbcf4400aa9af0003b08d41d.pdf
- https://cdn.shopify.com/s/files/1/0437/3194/3585/files/71999997601.pdf
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/14955841343.pdf
- https://cdn.shopify.com/s/files/1/0429/9754/7157/files/kikutujox.pdf
- https://cdn.shopify.com/s/files/1/0435/6122/2307/files/arifureta_from_commonplace_to_world_s_strongest_light_novel.pdf
- https://cdn.shopify.com/s/files/1/0429/6821/9799/files/xanasasigusiverajosafibi.pdf
- https://static.usrfiles.com/ugd/0047a4_504ffcc42bd946c29c0f37077de1d2a3.pdf
- https://static.usrfiles.com/ugd/3fb742_cbaafcdea01a4f5d9a641ea3afa8972d.pdf
- https://static.usrfiles.com/ugd/9d66c7_475ba94849cf437eb6921215e8d53d82.pdf
- https://static.usrfiles.com/ugd/93971e_fcbf5df0da8a4909b5bc4a71bd46b468.pdf
- https://static.usrfiles.com/ugd/1e32c2_256bad6bc72349b4860d64eb5cc4bb0f.pdf
- https://cdn.shopify.com/s/files/1/0434/0734/3779/files/vaxizitaxixi.pdf
- https://cdn.shopify.com/s/files/1/0431/2363/8426/files/xojiv.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006561.bin` `9f3ee657ac67daf54c9b5217c32813e78b04d7454dca40d5c97b768949c74110`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6561	4948 bytes
`font_01_sfnt_off00007634.bin` `99452c69795dc4073830088257dc34a25081e34fdd74b8b3875649ce1485feae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7634	10192 bytes
`font_02_sfnt_off00009900.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9900	4324 bytes

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