PDF malware analysis — malicious · ef4a0578691ef92e

MALICIOUS

PDF

9.8 KB Created: 2020-09-07 14:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: a521b3f36e2236b0736f56def78b0a2e SHA-1: 570aad13e11e4b3073fce4b4fdbb91ee63cbd10b SHA-256: ef4a0578691ef92e8f21eb36b492f880a5a8fa0ad3ceba5da4c94e01f910d653

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file is designed as an image-based lure, typical of phishing campaigns. It contains a malicious redirector link pointing to 'https://ttraff.club/wix?keyword=best+android+phone+under+10000+vivo', which is flagged as malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and URLs, suggesting an attempt to disguise its malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9963

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 9 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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.club/wix?keyword=best+android+phone+under+10000+vivo In PDF document text
- https://static.usrfiles.com/ugd/61804c_ae02e6a3384745c197680e7ed4b9bd47.pdfIn PDF document text

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