MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.ru/pify?keyword=kirchhoff%2527+s+current+law+derivation+pdf', is identified as a malicious redirector. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or SEO poisoning attack.
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=kirchhoff%2527+s+current+law+derivation+pdf
- http://files.jiyongkimm.co.uk/uploads/1/3/1/4/131409128/987622.pdf
- http://files.diabetesrelatedretinopathy.org/uploads/1/3/0/7/130776152/e619931c06c.pdf
- http://files.knitnatural.com/uploads/1/3/0/7/130775493/6634e9db6824.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/7743/5556/files/arduino_pro_micro_pinout.pdf
- https://cdn.shopify.com/s/files/1/0429/1608/5923/files/85490253790.pdf
- https://cdn.shopify.com/s/files/1/0437/5665/0645/files/pafilanetipusupesuvep.pdf
- https://cdn.shopify.com/s/files/1/0431/9199/2480/files/gimojatipa.pdf
- https://cdn.shopify.com/s/files/1/0432/8148/1884/files/cheat_engine_6._7_windows_10.pdf
- https://cdn.shopify.com/s/files/1/0431/8769/9876/files/house_building_plans.pdf
- https://cdn.shopify.com/s/files/1/0437/7313/2961/files/xawaridepasajukuzoju.pdf
- https://cdn.shopify.com/s/files/1/0431/4949/2384/files/jph_sociology_class_11.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/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000069f6.bin9571aa37ef98ca455f19400ef88fa90bdf4f36501288a02ffed899a42bc3f599 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69F6 | 5400 bytes |
font_01_sfnt_off00007c68.binafbbf6258629502ff0974fd07229d99a90e898cc6161e98a6dbcf8bdc3a88114 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C68 | 11052 bytes |
font_02_sfnt_off0000a27c.bin45aafc659c27aee3bb47d3e4ec9a1f0673b619c4c502148d582ac7091e2e8f5d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA27C | 16332 bytes |
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