MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, many of which point to other PDF files hosted on unrelated domains. This behavior is indicative of a link farm or SEO manipulation tactic, but the presence of a critical heuristic firing for 'PDF_SEO_LINK_FARM' and a high ML score suggests malicious intent. The document body also contains a URL that appears to be a lure for 'cryptography and network security principles'.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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 http://ttthardstyle.com/uploads/1/3/0/7/130740049/130740049.html#cryptography+and+network+security+principles+and+practice+seventh+edition+pdf PDF link annotation
- http://thebutlergroupllc.net/uploads/1/3/1/4/131454603/denafanuwovavi_pemaxowu_berumofe_difuluk.pdfIn PDF document text
- http://globalaluminumfurnishings.com/uploads/1/3/0/6/130621051/5036857c3c35f.pdfIn PDF document text
- http://tattoosbyaross.com/uploads/1/3/1/8/131856706/0427f62eda8.pdfIn PDF document text
- http://ciardhamedia.com/uploads/1/3/0/5/130539923/3161670.pdfIn PDF document text
- http://strattonacademy.com/uploads/1/3/1/3/131383266/bozolorum.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000070a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70A2 | 10280 bytes |
SHA-256: 2a0d3d5c594279f3f6d951910ac4f83487e317cd114e3bbc94b41233ef9679c7 |
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