MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a heuristic firing for a link farm, indicating an attempt to direct users to external websites. One of the primary URLs identified is 'https://traffnew.ru/123?utm_term=yang+guo+md', which is likely malicious. The presence of numerous external PDF links, including one hosted on 's3.amazonaws.com', suggests a tactic to distribute further malicious content or engage in SEO manipulation for malicious purposes. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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External URI info PDF_URIPDF contains an external URL action
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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://traffnew.ru/123?utm_term=yang+guo+md
- https://cdn-cms.f-static.net/uploads/4369779/normal_5fa669cfc9c5a.pdf
- https://cdn-cms.f-static.net/uploads/4374535/normal_5f9060bfbff23.pdf
- https://cdn-cms.f-static.net/uploads/4408976/normal_5fa200f84eada.pdf
- https://sekulawovow.weebly.com/uploads/1/3/4/5/134578441/493898.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/jadudusujuje/female_dwarf_last_names.pdf
- https://s3.amazonaws.com/wiwamoxamo/6386247719.pdf
- https://s3.amazonaws.com/tadovu/danganronpa_trigger_happy_havoc_characters_list.pdf
- https://uploads.strikinglycdn.com/files/1c26f53a-e560-43b9-b22b-185a8916b36f/97498636018.pdf
- https://s3.amazonaws.com/mogelebolep/77844390097.pdf
- https://uploads.strikinglycdn.com/files/9c331c2a-81a1-4764-8772-5e02f6c13783/wanasuzizemiwive.pdf
- https://uploads.strikinglycdn.com/files/9e40e857-04ee-4cf4-8154-66aad03b070f/the_story_of_stuff_summary_essay.pdf
- https://uploads.strikinglycdn.com/files/8b0c3b21-bec3-4efe-9daa-8fcecfab0249/zinujasidef.pdf
- https://s3.amazonaws.com/lusegokaves/edinburgh_airport_destinations_guide.pdf
- https://uploads.strikinglycdn.com/files/6386ef1c-c7f4-4823-a5b5-ba9c38fa255b/vananuxinukejapusovixa.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b118.bin7c621b030c1bb8a3acca2e10997351a968bcf9ddde85144d07b0d355a8af6a55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB118 | 4800 bytes |
font_01_sfnt_off0000c160.bin1e5eac4660169918df6a4ece6cad83b4decc1149ec0fedf34dd279ac49cc1c9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC160 | 10140 bytes |
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