MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document is designed as a lure, masquerading as a worksheet answer key to entice users to click on numerous embedded links. The primary malicious link identified is https://ttraff.ru/wb?keyword=water%20erosion%20and%20deposition%20worksheet%20answer%20key, which is flagged as a redirector to malicious infrastructure. The document also contains a large number of other PDF links, many of which point to domains associated with link farms, suggesting a broad distribution or SEO poisoning tactic.
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/wb?keyword=water%20erosion%20and%20deposition%20worksheet%20answer%20key In PDF document text
- http://files.travelsbyjill.com/uploads/1/3/0/9/130969628/napopuzajas.pdfIn PDF document text
- http://files.simplypairedcatering.com/uploads/1/3/2/6/132695399/d57ca9.pdfIn PDF document text
- http://files.frontporcharts.org/uploads/1/3/0/7/130739069/5237679.pdfIn PDF document text
- http://files.treadawayclass.org/uploads/1/3/1/8/131856331/e9d225e9.pdfIn PDF document text
- http://files.parkhillbowlingclub.com/uploads/1/3/2/8/132815154/4047543.pdfIn PDF document text
- http://files.vegoutwithmeagan.com/uploads/1/3/1/4/131437799/jipesopewabivaf-wivefidalejoz-logiganogi.pdfIn PDF document text
- http://files.duganspecialties.com/uploads/1/3/1/3/131398250/pulorijamaxav-kepar-zuboburewod.pdfIn PDF document text
- http://files.uluvmystyle.com/uploads/1/3/2/7/132740700/tagorota.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://jozimuril.files.wordpress.com/2020/06/fikuzudefubanipabelilutu.pdfIn PDF document text
- https://lusigezoxot.files.wordpress.com/2020/06/satunubesozumi.pdfIn PDF document text
- https://rizukajo.files.wordpress.com/2020/06/betagota.pdfIn PDF document text
- https://depivufegel.files.wordpress.com/2020/06/pipolinekutewo.pdfIn PDF document text
- https://bagesamajar.files.wordpress.com/2020/06/bexosuxeduzuvozatafajaf.pdfIn PDF document text
- https://turimofusi.files.wordpress.com/2020/06/49441502797.pdfIn PDF document text
- https://wufabok.files.wordpress.com/2020/07/tipexinovebigesunaxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78491346320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vekedexixerokasadoboma.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.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_off00006730.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6730 | 5072 bytes |
SHA-256: 3c7aaf4db53a2fef14bf50290d7dc3e1e8204d623178f51c9fec7da1c251553c |
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font_01_sfnt_off0000787c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x787C | 9792 bytes |
SHA-256: 5a49f001e41cec98f93467b534db6ce04fac3a6f59ba20a8711b49547d0cf78d |
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