MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
T1059.001 PowerShell
The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, `https://ttraff.ru/wb?keyword=gathering%20blue%20study%20guide%20pdf`, points to a known malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous links indicates a social engineering attempt to drive traffic to malicious infrastructure.
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=gathering%20blue%20study%20guide%20pdf In PDF document text
- http://files.kathysartplace.com/uploads/1/3/0/7/130739076/pibif_rapakuge_vogefov.pdfIn PDF document text
- http://files.stjohn23rdyouth.org/uploads/1/3/1/4/131438641/6009046.pdfIn PDF document text
- http://files.dmlimos.com/uploads/1/3/1/4/131438441/3fb7000c8854e.pdfIn PDF document text
- http://files.foreverhorsecrazy.com/uploads/1/3/0/8/130874510/fokezumofiwez.pdfIn PDF document text
- http://files.laurasarts.com/uploads/1/3/0/7/130775297/vufeligej.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/1/0431/4519/9784/files/19101702392.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0200/3609/files/kanosofumesobuxejuwi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6980/9564/files/60228994349.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8451/3429/files/tekexapakeledegubudaguni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdfIn PDF document text
- https://vomujonij.files.wordpress.com/2020/06/kamarurumigogubukitarufog.pdfIn PDF document text
- https://vipodujenij.files.wordpress.com/2020/07/99078679133.pdfIn PDF document text
- https://lagupok392153502.files.wordpress.com/2020/06/tepomemebelet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3412/3160/files/21733776709.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0643/5232/files/punidawokojawixomi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5122/1146/files/riputakumajido.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8643/8807/files/ruvabodojerareliwaxixig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0522/2818/files/67873690755.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7602/5497/files/97025767464.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3443/4974/files/59440024422.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8212/1377/files/fujuderefabivesuf.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_off00007319.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7319 | 5348 bytes |
SHA-256: 3e262bb2435878649cdb296e4718714bb30c0f0de905cab6c864f53482523f56 |
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font_01_sfnt_off00008544.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8544 | 10276 bytes |
SHA-256: d88478c0a4e15d8e80d52d4c70980ab0d6c13b57bffd31adaa8486a249ba558c |
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