MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged as malicious due to a high number of embedded links, many of which are part of a link farm likely intended for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=grammar+worksheets+for+grade+11+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous external PDF links, including those hosted on Shopify, indicates a broad distribution strategy. No scripts were extracted, and the primary malicious functionality appears to be link redirection and potential SEO abuse.
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.cc/pify?keyword=grammar+worksheets+for+grade+11+pdf In PDF document text
- http://zexojux.uniquepersonalstatements.com/uploads/1/3/1/3/131383388/7004728.pdfIn PDF document text
- http://tuwemesi.southernfisheries.org/uploads/1/3/1/4/131437308/9197c8283.pdfIn PDF document text
- http://files.vincentamelio.com/uploads/1/3/2/7/132740549/85bb755e12765.pdfIn PDF document text
- http://files.lectionarypress.com/uploads/1/3/0/8/130874583/bb00b05e4c.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/1/0435/5080/2081/files/html_full_codes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5938/8320/files/keduzafejetagojik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7622/2114/files/schwinn_electric_scooter.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2296/7207/files/rafeterusadelege.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8226/1415/files/29305673137.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9154/2681/files/html_nav_tag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6388/3429/files/18360131825.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7125/0333/files/poxatinegidetujovur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1334/0316/files/88181666597.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1921/4758/files/gibaporapibagidurox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8212/1377/files/paxiguxerivaxexujazurixew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/5376/3999/files/types_of_multilingualism.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_off000069d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69D7 | 5664 bytes |
SHA-256: b91b316c73ef5448bb8c427f37fea7a711a126c17b1c05da5d959d83d2dcc8c0 |
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font_01_sfnt_off00007d1d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D1D | 10176 bytes |
SHA-256: be823d78e499853ddfd22c309300a5470b7d27ab24ce40827fa8808c66bebecb |
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