MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. The primary attack pattern involves a link farm, directing users to numerous external PDF documents, likely to manipulate search engine results or host further malicious content. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://crophysi.ru/wb?keyword=hummingbird%20resources%20annual%20report%202017
- https://static.s123-cdn-static.com/uploads/4470220/normal_5fce231338386.pdf
- https://vofovolovun.weebly.com/uploads/1/3/1/4/131483423/pekesav.pdf
- https://cdn-cms.f-static.net/uploads/4408584/normal_601f96c5a5718.pdf
- https://viwekaxirudadax.weebly.com/uploads/1/3/4/7/134700275/pekuvod.pdf
- https://cdn-cms.f-static.net/uploads/4381973/normal_600cf58aa7c58.pdf
- https://cdn-cms.f-static.net/uploads/4386095/normal_6017c35447ad7.pdf
- https://cdn-cms.f-static.net/uploads/4465392/normal_601e331510a1f.pdf
- https://static.s123-cdn-static.com/uploads/4471686/normal_5fe5e4c12c4a5.pdf
- https://static.s123-cdn-static.com/uploads/4453553/normal_5fcf7c8dcac58.pdf
- https://sinezotuze.weebly.com/uploads/1/3/0/9/130969777/df27706e.pdf
- https://static.s123-cdn-static.com/uploads/4494891/normal_5ff026bd6c42b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/jopomodilamego/84517787111.pdf
- http://davagutuvis.rf.gd/31290065305.pdf
- https://s3.amazonaws.com/pazerogasarinu/25338718298.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_off0000e996.bin7d29406b838f3830b7a3804ae9583582b41053cf617a78f2cd8d697454f3f487 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE996 | 5900 bytes |
font_01_sfnt_off0000fd9a.bin4e987887123099a0bd0189a46394e82ad9af10763e745ad955bc0e62ac524d73 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD9A | 11248 bytes |
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