PDF malware analysis — malicious · b26b9725ee4495a5

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 15:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 028d7856ee01cd71cc62268c3c2c6273 SHA-1: bd4b304cfbedb44c26f043ea6089d2bf65d9bd3c SHA-256: b26b9725ee4495a50ac1a0958bd796759539ff616c01ddd02fbe00052181d4e1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, suggesting an SEO manipulation or link farm tactic. The primary malicious URL identified is https://ttraff.com/wix?keyword=adventure+games++for+android+uptodown. While no scripts were extracted, the sheer volume of outbound links and the presence of a redirector indicate a likely attempt to lure users to malicious content or exploit traffic.

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/wix?keyword=adventure+games++for+android+uptodown
- https://static.usrfiles.com/ugd/b8c837_da9089b82e744d2498ab6fadc3cd9248.pdf
- https://static.usrfiles.com/ugd/c3f59f_292471cc299a4c0cac7ce12f3d77e93c.pdf
- https://static.usrfiles.com/ugd/b8c837_5f200ab4ebdb4b10b98f773635ebf639.pdf
- https://static.usrfiles.com/ugd/238140_49766b6077d6498a997f29d4c869a5f9.pdf
- https://static.usrfiles.com/ugd/b8c837_a141e5303cdf4d0892d752e5f9f955af.pdf
- https://static.usrfiles.com/ugd/b8c837_facd8f0f98a144e2b13d908f4d4011ff.pdf
- https://static.usrfiles.com/ugd/b8c837_dadf793f1f094f208f6c03aaa8983bea.pdf
- https://static.usrfiles.com/ugd/1e32c2_fd608bdbf9464c9e9ca719e7f47cc511.pdf
- https://static.usrfiles.com/ugd/4b68be_7b280d4320b248daba8b814325ec50a2.pdf
- https://static.usrfiles.com/ugd/7ea8bb_181483952a07451ba19462a124c0d21f.pdf
- https://static.usrfiles.com/ugd/b8c837_3ae7500b4a6e419fb4371d4f923e6e19.pdf
- https://static.usrfiles.com/ugd/4c76bf_d792b0d352f841979b4f14c3258cafc4.pdf
- https://cdn.shopify.com/s/files/1/0431/4238/1725/files/vaquita_marina_informacion_y_caracteristicas_biologia.pdf
- https://cdn.shopify.com/s/files/1/0436/2836/3939/files/black_color_code.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_off00005769.bin` `56088f138adf7effeb4ab727aa88dbcfbc2ce3a7cf378903be73b3f4e75b8dcf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5769	4020 bytes
`font_01_sfnt_off000065c1.bin` `520e854c6c0e3669a1d00ee5bf81853f0723d662188d573dbcd4959a507f4cfd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65C1	5472 bytes
`font_02_sfnt_off0000785f.bin` `24e577361fad707efa4ed85d3c5d05130259553b4ec8c02dfdb501a2d3451b4d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x785F	15072 bytes

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