MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document contains numerous external links, including a link farm, and the embedded content suggests a lure related to 'chapter 13 cardiovascular system worksheet answers'. The presence of external URIs and the overall structure indicate an attempt to redirect users to potentially malicious sites for further exploitation or phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://traffking.ru/123?utm_term=chapter+13+cardiovascular+system+worksheet+answers
- https://fumirufax.weebly.com/uploads/1/3/1/8/131856188/3842307.pdf
- https://site-1176250.mozfiles.com/files/1176250/36175958597.pdf
- https://cdn-cms.f-static.net/uploads/4366018/normal_5f88ce331f1bb.pdf
- https://cdn-cms.f-static.net/uploads/4381978/normal_5f9a6cda6b216.pdf
- https://mubuvume.weebly.com/uploads/1/3/4/8/134885019/giwepeni.pdf
- https://site-1172508.mozfiles.com/files/1172508/blood_pressure_monitor_wrist_watch.pdf
- https://site-1204816.mozfiles.com/files/1204816/magic_tiles_piano_and_vocal_mod_apk.pdf
- https://static.s123-cdn-static.com/uploads/4449629/normal_5ffd62c0e3f85.pdf
- https://cdn-cms.f-static.net/uploads/4369796/normal_5fa41c0fa98fc.pdf
- https://madigapelodawip.weebly.com/uploads/1/3/4/8/134846312/jekebalubabaxulu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gelawiweza/27659656270.pdf
- https://s3.amazonaws.com/gogunabones/5774222380.pdf
- https://s3.amazonaws.com/mefovu/dubenefama.pdf
- https://s3.amazonaws.com/xaliwalufoguni/email_format_for_request_letter.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d822.bin58633f1301305b8c1dd8b140a0c0c940ad70a8f702d36567bbdfab6e3b8e3eb7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD822 | 5752 bytes |
font_01_sfnt_off0000eba8.bin6c483aa330f7f1b72d0368fc679ece1c9fb51c29df4417fb0c94b5838d33b1bd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBA8 | 10736 bytes |
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