MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous links designed to appear as legitimate educational content, but they redirect to a malicious domain. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document is part of a link farm aiming to redirect users to malicious infrastructure. The ML classifier also strongly suggests 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/wb?keyword=physics%2012%20rotational%20equilibrium%20worksheet In PDF document text
- http://files.mrcrall.com/uploads/1/3/1/4/131438843/6543773.pdfIn PDF document text
- http://files.connallyband.com/uploads/1/3/1/8/131856381/koguwoxixude.pdfIn PDF document text
- http://files.bbeautyco.com/uploads/1/3/1/8/131856703/6527427.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/1/0432/9606/3652/files/6277252978.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4555/1271/files/xotibipasemi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2174/5822/files/75088567853.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1912/4382/files/95202308220.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6623/7852/files/lujinozuv.pdfIn PDF document text
- https://kufakim.files.wordpress.com/2020/07/nesofogikimomife.pdfIn PDF document text
- https://bivuwid.files.wordpress.com/2020/06/xomak.pdfIn PDF document text
- https://nofosepeji.files.wordpress.com/2020/07/24570151830.pdfIn PDF document text
- https://gamekupori.files.wordpress.com/2020/06/riwomogunatavex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1175/1579/files/zokedufolifujovorafodom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0645/2127/files/somibilidot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3525/5203/files/51572634260.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4615/0039/files/fowidosovitabupomu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5062/3385/files/runudexetego.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6243/5739/files/82450513709.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5029/5708/files/zusigilizunowonikimibu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9782/6207/files/62886547297.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_off00006e38.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E38 | 5628 bytes |
SHA-256: 1de2174be548107750fa9812a69e04c688fd351d31878ee3058f3ad9a44df393 |
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font_01_sfnt_off00008144.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8144 | 9708 bytes |
SHA-256: cdb5c4495a1a4e1cace7f2f1647493b3730fd2c13edd385496ddb0ca705989e4 |
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