MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link farm designed to appear as a legitimate download for "Rxprep 2018 pdf free download". The primary malicious URL, https://ttraff.ru/pify?keyword=rxprep+2018+pdf+free+download, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a SEO-based lure to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.
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=rxprep+2018+pdf+free+download In PDF document text
- http://files.mariozaragoza.net/uploads/1/3/0/7/130776449/wagime-muvuxawi.pdfIn PDF document text
- http://files.nenegateschool.co.uk/uploads/1/3/2/6/132695391/c33b1c8e9e0e94.pdfIn PDF document text
- http://files.fccvideo.org/uploads/1/3/1/8/131857445/filaz-gimaxikusofew.pdfIn 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/1/0430/4578/1665/files/48629867470.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2167/2356/files/kofipogidotaninujag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9395/8560/files/zakafifegotifeful.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8257/8088/files/tunufipavawagebugobotuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demotufilonameviv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8865/7051/files/34667522874.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6635/0998/files/noxigurabifolalo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6522/1028/files/20175446138.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0331/3308/files/19634803331.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6470/4662/files/44117817545.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0505/8976/files/18400959845.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2284/4067/files/rokitel.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_off00004776.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4776 | 5204 bytes |
SHA-256: 68663bb8bfa12f80a9774a1a0b34c94443d2bbb298f20589a48e9edc96492bca |
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font_01_sfnt_off00005946.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5946 | 10136 bytes |
SHA-256: ceeaa3f51b493c666c1df989af21289eb7611ccf102312215aa0eb3ec7bda3c1 |
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font_02_sfnt_off00007bdd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BDD | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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