MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a malicious redirector link disguised as a biology textbook PDF, which is a common lure for phishing or malware delivery. The ML classifier strongly indicated maliciousness. The document body contains obfuscated text and a link to `https://ttraff.com/pify?keyword=biology+textbook+online+pdf`, which is a known malicious redirector. The PDF also contains a large number of external links, many pointing to Shopify domains, likely as part of an SEO-based link farm to improve search engine ranking for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=biology+textbook+online+pdf
- http://files.barriecowan.com/uploads/1/3/1/0/131070216/zutetexelenovuz-kugum-rewekez-fesisonixazox.pdf
- http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdf
- http://files.devinbeliveau.com/uploads/1/3/1/3/131380138/befize_budopevifesax_kawijulegez.pdf
- http://kugos.abookstudio.com/uploads/1/3/0/9/130969323/xalabivox-jivifepazabuwi.pdf
- https://cdn.shopify.com/s/files/1/0436/5965/7374/files/15247038270.pdf
- https://cdn.shopify.com/s/files/1/0439/2960/0168/files/60696777063.pdf
- https://cdn.shopify.com/s/files/1/0438/0668/7389/files/brocade_switch_commands.pdf
- https://cdn.shopify.com/s/files/1/0431/8016/3227/files/31325127626.pdf
- https://cdn.shopify.com/s/files/1/0432/0205/2257/files/zozuxupusigigonukofebib.pdf
- https://cdn.shopify.com/s/files/1/0433/8617/5651/files/96635943381.pdf
- https://cdn.shopify.com/s/files/1/0431/4500/3169/files/nafulirekaxi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
- https://cdn.shopify.com/s/files/1/0433/1474/1413/files/jorujofe.pdf
- https://cdn.shopify.com/s/files/1/0432/1961/5901/files/makinet.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007892.bind139db4ad20586bf59e3b4247a965eba2b481760124d5728df5685812e1db5d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7892 | 5148 bytes |
font_01_sfnt_off00008a33.bin5016460559073ead964de071ed9f1c9b7ad9df26eb8cbb6d37a777ba6a2d335d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A33 | 9908 bytes |
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