PDF malware analysis — malicious · c65032bfe4961aaf

MALICIOUS

PDF

40.9 KB Created: 2020-09-03 13:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0905851361917c9e0c40a2941b4a5878 SHA-1: 9a0fa3aba9e5e5d8842a599b0dee83edce4f7790 SHA-256: c65032bfe4961aaf2d1a13c2a7602efe3ade2cada483710685f289653af5be3c

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to distribute further malware or phishing content. The document body, though heavily obfuscated, contains the same keyword as the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or to host additional 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=aerial+hammock+performance+video
- https://static.usrfiles.com/ugd/e5412a_44bbbcf5b7c245af87dedb7a83a1d73f.pdf
- https://static.usrfiles.com/ugd/f3cb45_52384f5ea79a4213896d620d33e5d0f5.pdf
- https://static.usrfiles.com/ugd/b8c837_ee54e5af58e14636a35fe75f85312b15.pdf
- https://static.usrfiles.com/ugd/defd8a_885e3c00e06f4aa3b893f586c636caa6.pdf
- https://static.usrfiles.com/ugd/2a1429_4911e753ee7648559dc7e22cc58d31f5.pdf
- https://cdn.shopify.com/s/files/1/0436/1761/6034/files/87662431482.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53978683100.pdf
- https://cdn.shopify.com/s/files/1/0430/9853/8151/files/translate_arabic_file_to_english.pdf
- https://cdn.shopify.com/s/files/1/0431/5054/0964/files/88710493761.pdf
- https://cdn.shopify.com/s/files/1/0431/9831/6707/files/kuzabu.pdf
- https://static.usrfiles.com/ugd/cc14e4_b639883a8b3544a4b6593d290d7773b5.pdf
- https://static.usrfiles.com/ugd/73f3b0_70497b73bfb54f47b31c12ae125a3325.pdf
- https://static.usrfiles.com/ugd/b8c837_d6be4d119454488385e544be8e0be150.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_off0000616c.bin` `aab46a31436907dc3b7d28d8da400250e43509c3e5154c3e1dbb468846e1ec9d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x616C	5328 bytes
`font_01_sfnt_off0000736c.bin` `49ac1968f024a657da24ac0259945bf31abb28cafc03d986e8143e6810574b43`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x736C	10352 bytes

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