PDF malware analysis — malicious · c3b520fb04a31897

MALICIOUS

PDF

18.6 KB Created: 2020-11-04 04:03:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6f3b35f677ccee788a8ed6a70023a280 SHA-1: b7dfa47591a078737b513889ae09502e692245c2 SHA-256: c3b520fb04a31897f84b114b700a2b90a3502ea5eedf8e8195d3215551a92e25

112 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a single image and minimal text, designed to trick users into clicking a link. The embedded URL https://cctraff.ru/strik?keyword=dolch+sight+words+kindergarten+in+pdf is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9965

Heuristics 3

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-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 18 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://cctraff.ru/strik?keyword=dolch+sight+words+kindergarten+in+pdf
- https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/4211688.pdf
- https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/juxex_muxofe_wonej.pdf
- https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/nokoleten.pdf
- https://s3.amazonaws.com/petikamov/oat_test_breakdown.pdf
- https://s3.amazonaws.com/zetubakuz/rekogawit.pdf
- https://s3.amazonaws.com/zasepo/felitidexapamoro.pdf
- https://s3.amazonaws.com/fusidejebi/raruxuj.pdf
- https://s3.amazonaws.com/wenobagupexekap/vocabulary_in_use_vk.pdf
- https://uploads.strikinglycdn.com/files/a3cf1ad7-7f8b-4743-9cec-f4d1691e0b80/27719058272.pdf
- https://s3.amazonaws.com/bikikanafopavu/2020_1040_estimate_due_dates.pdf

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