MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm, indicating a probable SEO poisoning or spam campaign. The document body contains a URL that points to a malicious redirector, which is likely intended to lead the user to a malicious site or download further malware. 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.cc/pify?keyword=calendario+escolar+2020+e+2020+sep+pdf In PDF document text
- http://files.pondviewfarmofmonroe.com/uploads/1/3/0/9/130969893/75a4598afa5b.pdfIn PDF document text
- http://files.rose-annerussell.com/uploads/1/3/1/1/131164474/2237495.pdfIn PDF document text
- http://files.hommersaakutleie.com/uploads/1/3/0/7/130775528/6995101.pdfIn PDF document text
- http://files.saveourchinatown.org/uploads/1/3/1/3/131381109/daleduti_muxej.pdfIn PDF document text
- http://files.princessinthemirror.net/uploads/1/3/2/7/132712661/79553d93.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/1/0443/0423/6700/files/sqrt_in_c.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9378/6791/files/dufubimadiwemuvilunijif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5666/8573/files/32442185335.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8165/3655/files/86621066607.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3367/4396/files/98666125243.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8583/1070/files/41853773723.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0427/1524/files/filokobon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1384/6693/files/junamonaji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7433/0517/files/kefofalajaxirelokaxigagom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9147/6133/files/19015065064.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9017/3349/files/minawewu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1769/1559/files/clases_de_sustantivos_ejercicios_resueltos_5_primaria.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000058ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58ED | 5328 bytes |
SHA-256: 99cd706c992000d3bd7268fc98707f821a99a18b9605fc1b95454aa8edf9fc6e |
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font_01_sfnt_off00006b14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B14 | 10796 bytes |
SHA-256: 56c3af900d272d434f0fdb134506bb5127721ec6ec0edae75b187717abd7529e |
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font_02_sfnt_off00009009.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9009 | 16204 bytes |
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd |
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