MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document functions as a link farm, presenting a lure of a "biology textbook for secondary school" to entice users. It contains numerous links, including one pointing to malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=biology+textbook+for+secondary+school`. The presence of a large number of external PDF links, many of which are SEO-optimized, suggests an attempt to drive traffic to potentially malicious or unwanted content.
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+textbook+for+secondary+school In PDF document text
- http://files.advancead.com/uploads/1/3/0/7/130775949/d7fb5b240ba12.pdfIn PDF document text
- http://dalam.muphipvsouthbay.org/uploads/1/3/0/7/130776088/zejafupedukexewaf.pdfIn PDF document text
- http://files.soulsweetproductions.com/uploads/1/3/1/6/131636737/f6387a5f7fc5a6.pdfIn PDF document text
- http://files.militarypsych.org/uploads/1/3/1/3/131384025/pudaguzapu.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/1/0444/5346/2183/files/sample_balance_sheet_and_income_statement_of_a_company.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2119/5688/files/autodesk_sketchbook_apk_hack_version.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7881/1810/files/how_to_refresh_jquery_autocomplete.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/afcat_result_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5982/2243/files/sabixadizun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0454/7071/1958/files/suzomelezafoduwume.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9643/8936/files/76866625015.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3792/5281/files/discovering_the_humanities_3rd_edition_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3618/0634/files/56383136975.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/6466/7810/files/aachen_city_map.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5684/0350/files/buxelopezexojifax.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_off000064ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64AE | 5704 bytes |
SHA-256: 08e17bbdf8bbd2954c99c2972626c574e14b3bcc967006691954ae484462d10a |
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font_01_sfnt_off0000781e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x781E | 10896 bytes |
SHA-256: e7ed221fe43c17417d3afda066a51b9545a8b64084ee6ec9c0d8d793ee59aa61 |
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