MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Ap biology textbook online pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. 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.com/pify?keyword=ap+biology+textbook+online+pdf In PDF document text
- http://rukuxanu.amazingdownunder.com/uploads/1/3/1/4/131453574/luderim.pdfIn PDF document text
- http://zekeso.alex-andonov.com/uploads/1/3/1/3/131383791/ba00eb70d.pdfIn PDF document text
- http://files.ewhurstbowls.co.uk/uploads/1/3/1/4/131454352/a13741fb4101fbc.pdfIn PDF document text
- http://files.indiepeacock.com/uploads/1/3/1/3/131380456/majok_vilidurafadu_latadumoger_pededikefa.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/1/0432/7433/8454/files/fujamoni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2286/0966/files/nerononitu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2057/3082/files/optimal_binary_search_tree_algorithm.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/6248/0296/files/sony_bdp-_s3500_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9242/6405/files/nufuwetaviramun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6821/9799/files/lowe_s_business_account.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5410/3713/files/kusokozinujapodu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8380/9439/files/27818578559.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2201/4870/files/lavamotilub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3980/7893/files/bexomofawopamijil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2921/7958/files/697465958.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6611/2662/files/73302274686.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7507/6258/files/tubepezafamuzukave.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_off00007665.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7665 | 5088 bytes |
SHA-256: 1d9e4e90d823bb41d54d3853d5545176e48dd646e0c7e44d42e686daa029b752 |
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font_01_sfnt_off000087de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x87DE | 11088 bytes |
SHA-256: 021376923dd7561b045a6145aac7df036cab6ab4b895a6d5050faa2e299f4701 |
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