MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains text suggesting it is an 'admission guide', a common lure for phishing or malware distribution. The presence of a download button heuristic further supports the malicious intent of redirecting users to potentially harmful content.
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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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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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/pify?keyword=amu+admission+guide+2020+pdf In PDF document text
- http://files.honestdefender.com/uploads/1/3/1/6/131606502/013de20d44540.pdfIn PDF document text
- http://mutuxot.janeincolour.com/uploads/1/3/1/8/131856725/1567978.pdfIn PDF document text
- http://files.electricianlivingston.org/uploads/1/3/1/4/131437117/taviruzebubosaw_putup_gijogofudegomi_wabegolofufej.pdfIn PDF document text
- http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.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/1/0446/1415/6451/files/isometric_and_orthographic_drawing_worksheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2509/7126/files/43028545939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8051/5738/files/mosumelatixuwusijozutege.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5895/3369/files/desiwuvejofobilezodukaxep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9173/8277/files/texopamavewozafine.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1077/6478/files/32430605369.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6482/8839/files/29656602378.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5542/4423/files/83608107334.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7781/9802/files/pipisigomifege.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9628/6111/files/25841195773.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4352/8609/files/webuxiwitake.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6275/5490/files/28942242020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6766/9654/files/bugifitumisimojavu.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_off00007c74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C74 | 5496 bytes |
SHA-256: b115caed43c43c96da36eb6606344768fee4aa3efc2ca3e89ff8b9a8a5c1de23 |
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font_01_sfnt_off00008f19.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F19 | 10080 bytes |
SHA-256: 54d109cae12f45206cf28a77dc17e2ca99a89babbc3fa1671e6e93dc4cda933f |
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