MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded links to external PDF files, a common tactic for SEO poisoning or distributing malicious content. One of the links points to known malicious redirector infrastructure, indicating a high likelihood of malicious intent. The ML classifier also strongly flagged this PDF as malicious.
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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wb?keyword=combine%20multiple%20pdfs%20into%20one%20file%20adobe%20reader In PDF document text
- http://files.jimirvinepottery.com/uploads/1/3/1/6/131637919/e3cb29d449.pdfIn PDF document text
- http://files.otterworksusa.com/uploads/1/3/1/4/131437351/tasegus-rekafi-zeganusisaj-jigavulef.pdfIn PDF document text
- http://files.treetogrow.com/uploads/1/3/0/7/130775970/495ded3b3c.pdfIn PDF document text
- http://files.tidaleffects.com/uploads/1/3/0/7/130740493/puvova.pdfIn PDF document text
- http://files.youuoyrecords.org/uploads/1/3/1/3/131383510/tixijig.pdfIn PDF document text
- http://files.dnaleatherwa.com/uploads/1/3/0/7/130738814/8327209.pdfIn PDF document text
- http://files.westerncanineacademy.ca/uploads/1/3/1/3/131383664/lobop.pdfIn PDF document text
- http://files.savebozeman.org/uploads/1/3/1/4/131408529/80336d.pdfIn PDF document text
- http://files.braydenyork.com/uploads/1/3/1/8/131857193/72476bef29046cf.pdfIn PDF document text
- http://files.blackonsilver.lt/uploads/1/3/1/4/131437733/wigaremevekel-bavodivuj-lisazuraru-dasuji.pdfIn PDF document text
- http://files.omanroadshow.com/uploads/1/3/0/7/130776841/kasulojemuv.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://fifafix.files.wordpress.com/2020/06/49888967600.pdfIn PDF document text
- https://titefiv.files.wordpress.com/2020/07/80611417666.pdfIn PDF document text
- https://lukipidize.files.wordpress.com/2020/06/37555801661.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/duwaxufezemurogagur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.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_off00005b42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B42 | 5232 bytes |
SHA-256: 171c6d2891eb9116c48f6e80360520135bd2df67efa75fc514e40d17251d1f3b |
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font_01_sfnt_off00006ced.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CED | 10260 bytes |
SHA-256: c5cd0a6e7371c9f2b61f3aa13e5f580be03000b5b0eff962412ad6d504f082e0 |
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