MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL and a reference to 'wkhtmltopdf', suggesting it's a generated document. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be a lure to a malicious URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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=introduction+to+econometrics+stock+watson+pdf In PDF document text
- http://files.nebraskatraileroutlet.com/uploads/1/3/1/4/131483719/5930116.pdfIn PDF document text
- http://files.theroanokerestaurant.com/uploads/1/3/1/3/131380445/padami.pdfIn PDF document text
- http://files.guesshowmuchiloveyoujewellery.com/uploads/1/3/0/7/130738482/wufujisaku-vubaxubesonatof-vumusuxipokilom-xisusuniradet.pdfIn PDF document text
- http://wps.aw.com/aw_stockwatsn_economtrcs_1QuestionsIn PDF document text
- http://www.economics.harvarIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0431/2789/8268/files/64170462380.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9249/8850/files/7562232411.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9180/2777/files/xejelujejaweninegawinaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0777/8711/files/93463151205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3313/2193/files/14062275465.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1102/9666/files/xatavurubudum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2104/0792/files/tevuzatozaso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4364/2773/files/40094303488.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4270/0455/files/65890897421.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2843/8440/files/pugofupagifadamepow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3255/9267/files/91917976047.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7188/9817/files/benemezejiziti.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000615f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x615F | 5244 bytes |
SHA-256: 1c293d0e5b605a67f8b3f27b900cca71499c44d1be9fa542751744504ab02f7b |
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font_01_sfnt_off00007329.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7329 | 10124 bytes |
SHA-256: 21f1aaf2eca0eda4904d88900c592571f7e07225355f867467179692077de321 |
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font_02_sfnt_off000095d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x95D5 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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