MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document contains a link farm and a malicious redirector pointing to a lure for 'Cambridge English Advanced 2 PDF'. It explicitly requests recovery secrets or private keys, indicating a phishing attempt. The embedded URL https://ttraff.ru/pify?keyword=cambridge+english+advanced+2+pdf is a critical indicator of malicious redirection. The document body, though heavily obfuscated, contains the same lure URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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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://ttraff.ru/pify?keyword=cambridge+english+advanced+2+pdf In PDF document text
- http://files.aerialsouthampton.com/uploads/1/3/1/4/131483201/bejokowufe-sujovexafag-roxam-matuxemuj.pdfIn PDF document text
- http://files.opuspoodles.com/uploads/1/3/0/7/130739158/2349164.pdfIn PDF document text
- http://files.orchardhillsbangor.com/uploads/1/3/1/4/131437385/zaxavimidesipigez.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3486/9921/files/borelixakezolironuterige.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6429/4557/files/viguvupenokusakikumewi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3598/1974/files/army_acft_standards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6612/0609/files/dopeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3305/1814/files/letibexeronun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7375/7603/files/gonirexoje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9558/9013/files/80677003973.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/8690/9341/files/medicinal_chemistry.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9019/8180/files/adjectives_and_prepositions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0477/1999/files/97430432560.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7407/6315/files/aisc_seismic_design_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8817/5513/files/35873138019.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7867/1783/files/presentation_skills_body_language.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0402/5242/files/allweiler_centrifugal_pump_catalogue.pdfIn 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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007e6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E6E | 5804 bytes |
SHA-256: edb871f06a547f70c9d70d3a584656611ef2984e41bdf6f51fd9fc2c8eb95aa0 |
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font_01_sfnt_off0000920d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x920D | 10760 bytes |
SHA-256: 3d29ca39be962d437482cfc8fb7a17a1f7c6e3bd1da8633127f3ff06f55e9df0 |
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