PDF malware analysis — malicious · 3cb7df30178d3941

MALICIOUS

PDF

116.9 KB Created: 2021-05-21 07:42:57 +03:00 Authoring application: Martha Greene (via Lawrence Fernandez) First seen: 2021-05-29

MD5: 32b19617e2a259e632963a47a6de0357 SHA-1: 8db2880292ff6f96631a7dd77fe7cbdf7859fa70 SHA-256: 3cb7df30178d39418c4a2318bc0a68dcc87a29cce9e2411e2deb62084a57de94

64 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF is an image-only lure designed to trick users into clicking a link. The embedded URI points to 'http://quluwkq.rltek.com', which is likely a phishing or malware distribution site. The PDF structure and embedded URI strongly suggest a phishing attack, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier suspicious score 0.3975

Heuristics 4

Image-only PDF carries local builder path plus remote links high PDF_IMAGE_LURE_LOCAL_FILE_AND_REMOTE_URI

PDF is an image-only click lure that contains both remote HTTP(S) destinations and a file:/// URI exposing a local Windows/Linux builder path. That co-occurrence is not normal document linking; it matches generated clickbait/phishing carriers where the visible page is a screenshot and the clickable area sends the user to external infrastructure.
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 116 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
External URI info PDF_URI

PDF contains an external URL action
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 http://quluwkq.rltek.com PDF link annotation

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