MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1059.001 Command and Scripting Interpreter: PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the text 'Cambridge english speaking test pdf' and the malicious URL, suggesting a phishing lure. The primary malicious IOC is the redirector URL, which likely leads to further 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=cambridge+english+speaking+test+pdf
- http://kudar.graciouscross.org/uploads/1/3/0/7/130739783/zenogoja.pdf
- http://files.eghsbandboosters.com/uploads/1/3/1/3/131384679/mutedij.pdf
- http://files.way2wear.com/uploads/1/3/0/8/130874566/90f535a66e9.pdf
- https://cdn.shopify.com/s/files/1/0433/6202/5624/files/rupizikenezusenekos.pdf
- https://cdn.shopify.com/s/files/1/0429/0635/3823/files/apparent_and_absolute_magnitude_of_stars.pdf
- https://cdn.shopify.com/s/files/1/0428/0736/1703/files/geological_strength_index.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/salelixakibikiziz.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdf
- https://cdn.shopify.com/s/files/1/0431/7167/6314/files/50153859511.pdf
- https://cdn.shopify.com/s/files/1/0435/1875/4971/files/41562659380.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdf
- https://cdn.shopify.com/s/files/1/0437/8561/7570/files/86200975461.pdf
- https://cdn.shopify.com/s/files/1/0429/7257/7946/files/58491741341.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.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_off0000518a.bind0b858f72cac6c4dfdeec3eeae46fb6ac13337cef72db9a0bf4b49692809f3f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x518A | 5564 bytes |
font_01_sfnt_off0000643f.bin0ece67aa0311ec5902ad960f36a0f2a2f3677f5f050eac2cc56306be3b041fbd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x643F | 10288 bytes |
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