MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, with a significant portion pointing to disposable hosting services and one specifically identified as a malicious redirector. This suggests a phishing or spam campaign aimed at directing users to malicious infrastructure. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://ggtraff.ru/123?keyword=activity+13.1+what+is+meiosis+answers In PDF document text
- https://mivijupa.weebly.com/uploads/1/3/4/5/134578330/f27103c1.pdfIn PDF document text
- https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/kozigituribu_piwozavami_konoruwanuduwi_zekigugubigu.pdfIn PDF document text
- https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/kixafekudebonu.pdfIn PDF document text
- https://sadusanolomu.weebly.com/uploads/1/3/4/6/134646393/nazafilu_xojipemilewar_fufowelawup.pdfIn PDF document text
- https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/bavuvimufobetun.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408984/normal_5f99d007ed711.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366306/normal_5f871ed1ae084.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374703/normal_5f8d3c34c821b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366949/normal_5fa7e0b217339.pdfIn PDF document text
- https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/mawipubowibetin_pelesibatomo.pdfIn PDF document text
- https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/8953a135a083d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/vukumesoj/93262592285.pdfIn PDF document text
- https://s3.amazonaws.com/fikuvine/12235787108.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off0001020a.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x1020A | 28332 bytes |
SHA-256: 7939f7795ebfd4626a4d7ecc63c81503397fdf8911491ba067024f3698db5d1f |
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font_00_sfnt_off0000cb18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB18 | 5500 bytes |
SHA-256: f96e97d1ff24e3f4910bb0e75503571e24ee185904dc60ae25ec832559f5ac3d |
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font_01_sfnt_off0000ddcf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDCF | 10516 bytes |
SHA-256: 86d7da24f8a31bac5a1973306486f94d74d92ee81d66fbd40f98669eff78e7d5 |
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