PDF malware analysis — malicious · 2002e5b07ab3326a

MALICIOUS

PDF

40.8 KB Created: 2020-09-03 21:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f6cb2e6b818e20a54d19871e9d2a070e SHA-1: a7a987d592b6b83999225e842ac038b99041d6c1 SHA-256: 2002e5b07ab3326acd7c13f0f9b15da5071c9bbd4cc6d03804508a975b0a9bab

152 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, forming a link farm, with at least one link directing to known malicious infrastructure. The primary malicious URL identified is https://ttraff.me/wix?keyword=reforma+calvinista+resumo+pequeno. The document body appears to be corrupted or obfuscated, but the presence of the malicious redirector and the link farm strongly indicate a malicious intent, likely for SEO manipulation or to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=reforma+calvinista+resumo+pequeno
- https://static.usrfiles.com/ugd/d43733_59bdc4d792bc49f5bc0ae40880ef63aa.pdf
- https://static.usrfiles.com/ugd/b85eb0_c1c09b1b77b54932a5944bdc929f0d94.pdf
- https://static.usrfiles.com/ugd/b8c837_3f47abcdb9904945a9c1c2bf44638d6d.pdf
- https://static.usrfiles.com/ugd/23e9be_c8d88ac60d844fcdaac2c4a699a4acaf.pdf
- https://static.usrfiles.com/ugd/02beb7_7e2ede31f21140e58d4cb2ea7bbcc637.pdf
- https://static.usrfiles.com/ugd/c20ea7_20fdfaa4c695465eb219e62e2fffdcc4.pdf
- https://static.usrfiles.com/ugd/89363e_22de5948995d4f049050054c5d8e7280.pdf
- https://static.usrfiles.com/ugd/19103d_8dc93e22c8c54cc89dd04f52325ab932.pdf
- https://static.usrfiles.com/ugd/575fb0_b2b0595d5d9540c992fa039cd05fbd8a.pdf
- https://static.usrfiles.com/ugd/694d5d_9c5ad5fffcf444b185b0617a35f61961.pdf
- https://cdn.shopify.com/s/files/1/0438/9486/6088/files/dinupezesifi.pdf
- https://cdn.shopify.com/s/files/1/0431/4100/5480/files/bully_anniversary_edition_game_for_android.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_off000060b7.bin` `6b224b326202886cb22aa6e6bb85de8bc85e504c5ea90ffbbc528bbc240001ea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60B7	5356 bytes
`font_01_sfnt_off000072e6.bin` `5da02b641fad6b0bf1912075f85131b8aba6815daf6de2135d585b9e715bb36d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72E6	10556 bytes

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