MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text suggesting it is a "medicinal chemistry test bank pdf", likely a lure to encourage clicks on the malicious link. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for the malicious content. No scripts were extracted from this sample.
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.ru/pify?keyword=medicinal+chemistry+test+bank+pdf
- http://files.tivertonhsboosters.com/uploads/1/3/2/3/132303035/5b37a8ebacb.pdf
- http://files.justanhrgirl.com/uploads/1/3/1/3/131380213/tixobeboz-pirugamom-notopenoru-zugutolivex.pdf
- http://files.infraredheadart.com/uploads/1/3/1/4/131453144/5629298.pdf
- http://files.morinmath.com/uploads/1/3/1/3/131379699/jibuvosuvetu.pdf
- http://files.epicrobotics.co.uk/uploads/1/3/0/8/130874359/3884284.pdf
- https://cdn.shopify.com/s/files/1/0431/1030/1847/files/ancel_ad310_manual.pdf
- https://cdn.shopify.com/s/files/1/0432/2508/8168/files/94685179241.pdf
- https://cdn.shopify.com/s/files/1/0437/0835/0619/files/atresia_duodenal_pediatria.pdf
- https://cdn.shopify.com/s/files/1/0437/0438/5686/files/nenavomagilazisokim.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jedajuzosefowi.pdf
- https://cdn.shopify.com/s/files/1/0436/2380/9187/files/74308175081.pdf
- https://cdn.shopify.com/s/files/1/0434/3231/2994/files/44075534552.pdf
- https://cdn.shopify.com/s/files/1/0428/2040/3356/files/gezororapegevatizabowi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdf
- https://cdn.shopify.com/s/files/1/0433/5570/1398/files/fufitox.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_off00005d4d.bin81c2710de6d13cb736e3b11b7255eecd724e417a89b7db4362296b465dacebf3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D4D | 5704 bytes |
font_01_sfnt_off00007096.bind8fc2d1b6ecec5202ee0adf00e34bd5f5fe1b5c7d90b3a8479b6758eee637fb2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7096 | 10788 bytes |
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