PDF malware analysis — malicious · 8cd7df775979e6c0

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 16:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ec4fb01c7b48c39cc65f6f7f823ff003 SHA-1: 1b7c7fc6136bd77a3dd0e01ed3f47c2e9ef411f0 SHA-256: 8cd7df775979e6c0a2b7f8475ac9534f4dac624e6f4daf8458477c53f9d01a4b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The primary malicious indicator is the embedded URL pointing to 'ttraff.com', which is known for redirecting to malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing the phishing lure.

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=best+pregnancy+workout+dvd
- https://static.usrfiles.com/ugd/760101_d8655100e51c47bbb728ce2e6dd6688b.pdf
- https://static.usrfiles.com/ugd/b8c837_4b37cb7d5ce14beebf8bb283dede45f2.pdf
- https://static.usrfiles.com/ugd/0df15e_24fba62cb29844d991cf1db5ec794222.pdf
- https://cdn.shopify.com/s/files/1/0432/7089/7824/files/divinity_original_sin_ps4_strategy_guide.pdf
- https://static.usrfiles.com/ugd/74a852_76bccb9b848d46eda8eacd4ab246a70b.pdf
- https://static.usrfiles.com/ugd/b9801a_1828fbe94d914a9aa8b0ab2b0624b524.pdf
- https://static.usrfiles.com/ugd/de3d83_8f85502dab6a4304acddcf7ae3894cca.pdf
- https://static.usrfiles.com/ugd/3f80ec_5cc929c8d3284189973aaf70e5f42a2f.pdf
- https://static.usrfiles.com/ugd/3aca14_94b3f1ae06434973a1df7ac0ab1ceb13.pdf
- https://static.usrfiles.com/ugd/b8c837_718bb31baaeb4d43b6c8e52a6d7fb111.pdf
- https://static.usrfiles.com/ugd/67f5f7_967df44628dc4f9aaa1b1db98361b85d.pdf
- https://static.usrfiles.com/ugd/b8c837_278e3a57eae84c0eab8999e0be6f1c5e.pdf
- https://static.usrfiles.com/ugd/bae363_cd425f06e66f4a9394af48ebb109a8a8.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_off000072cc.bin` `978768811f9f544cbd9ee23610ea0de510462fef700ade0d2c6684d2561b108d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72CC	5576 bytes
`font_01_sfnt_off000085f5.bin` `7bd6dd776b75cc0426f42c5956daf89544bc43f359a9d15233a1e3a27812baee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85F5	10464 bytes

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