PDF malware analysis — malicious · af1b87f1a8c69456

MALICIOUS

PDF

84.2 KB Created: 2020-08-30 10:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e146a6540af456dbd25b5c3a56c1e219 SHA-1: 8400c8bf582e73ae466d5829e4cc11a8db43445c SHA-256: af1b87f1a8c69456f4f3559a356dcdea2bf17db84359af1a7bbffb60104c6832

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a PDF link farm, suggesting a tactic to broaden distribution. The embedded URL https://ttraff.com/wix?keyword=divinity+original+sin+2+tyrant%2527s+stride is the primary indicator of malicious intent, likely serving as a lure or a gateway to further 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.com/wix?keyword=divinity+original+sin+2+tyrant%2527s+stride
- https://static.usrfiles.com/ugd/4479ed_796894922af24f46836e56772af7a94f.pdf
- https://static.usrfiles.com/ugd/824332_778134755d6e4e50a95ba2b074272f1c.pdf
- https://static.usrfiles.com/ugd/9757e7_2b1fe4cd75774bb7882e986bd00c802b.pdf
- https://cdn.shopify.com/s/files/1/0430/4646/9793/files/lady_gaga_rar.pdf
- https://cdn.shopify.com/s/files/1/0467/5813/3923/files/fowuxoworanodadini.pdf
- https://static.usrfiles.com/ugd/77d535_8851ee2a7f1f4242a2e32db51bdd7536.pdf
- https://static.usrfiles.com/ugd/6f58fb_74eb30eb6d134422864f22075bda01eb.pdf
- https://static.usrfiles.com/ugd/8b9728_d604b50795e84b9390af894062ae0774.pdf
- https://static.usrfiles.com/ugd/80c1db_8b63f7cf95564327bd9443f44c36b5ef.pdf
- https://static.usrfiles.com/ugd/b8c837_a345e62f5d23477fb632024d0f5eda65.pdf
- https://static.usrfiles.com/ugd/b8bbd7_223591c7d9f14a5cbbe81304a509c3c1.pdf
- https://static.usrfiles.com/ugd/b8c837_1f1da4ce6619429eb17f13416e33ad5a.pdf
- https://static.usrfiles.com/ugd/b8c837_565e142e74bb4bff947d7d6f5e03d185.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_off000108ed.bin` `79cba629ba2bc6844b96aa97fbe73525abc5112f900331a9e66c6a5e1201bb03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108ED	5320 bytes
`font_01_sfnt_off00011b21.bin` `21fb5ab751f813ce48cae54cc7e0fa517d675aa5e62ee46b4785e2f41abb421b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B21	12644 bytes

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