MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=biology+book+for+class+10+in+english+pdf`. The document body, though heavily obfuscated, contains text related to a 'Biology book for class 10 in english pdf', suggesting a lure to disguise the malicious intent. The presence of numerous Shopify-hosted PDF links, alongside the malicious redirector, indicates a link farm or SEO poisoning tactic to distribute the malicious PDF.
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=biology+book+for+class+10+in+english+pdf In PDF document text
- http://files.geras.sk/uploads/1/3/2/6/132680901/sipamiratifo_negebuse.pdfIn PDF document text
- http://files.gavindougan.com/uploads/1/3/0/7/130739112/nexuvugukik-vogelazapi-tidatojanox-kalupamowamisen.pdfIn PDF document text
- http://bonozo.clubfitnessinspired.com/uploads/1/3/1/4/131407164/kemijunixikilulireze.pdfIn PDF document text
- http://files.microsoftconsult.com/uploads/1/3/0/7/130775732/4122f.pdfIn PDF document text
- http://files.corpuschristiquilters.com/uploads/1/3/2/6/132682040/naravagamuwo.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/1/0431/0895/8362/files/69829184294.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6295/1077/files/71712030308.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7053/7374/files/35708644853.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6213/1869/files/kedojekuxesenet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9732/5732/files/tibedaguzazefudiwupokiwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4565/0586/files/junutonugilesiguxetod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6579/4969/files/91436341045.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1674/1286/files/fipimebeno.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8297/2326/files/tegejokagov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4567/5420/files/babubow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4979/4213/files/60716067729.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0928/5024/files/2014_jeep_grand_cherokee_owners_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8099/0366/files/48426361007.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0936/7461/files/guxerusobaviwi.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_off000066c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66C5 | 5964 bytes |
SHA-256: 0b37b546de1598a90a29e80d9acf25939a9c053260f34b9766b40231d5c223cd |
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font_01_sfnt_off00007b1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B1E | 10144 bytes |
SHA-256: cb63609ffde74d8aa589514b154ccde3fe1f1b32d274c244956551e2ef0c2be3 |
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