MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was identified as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains text related to opening a stapler, likely a lure to encourage users to click the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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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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://cdn-cms.f-static.net/uploads/4373992/normal_5fe7219e997d3.pdf In PDF document text
- http://50off.pro/metodo_de_transporte_costo_minimo_on2n03q.pdfIn PDF document text
- http://kasyanbeauty.com/how_to_replace_element_on_jenn_air_cooktopyqwnb.pdfIn PDF document text
- https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/2906993.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443810/normal_603aaedb18326.pdfIn PDF document text
- https://kigodobegolalib.weebly.com/uploads/1/3/1/4/131453325/nogezel-vewuleferogi.pdfIn PDF document text
- https://levapexufusetij.weebly.com/uploads/1/3/4/9/134904519/7caf77.pdfIn PDF document text
- http://requiredjokblog.com/anarchy_online_agent_guide_2018a4g1k.pdfIn PDF document text
- https://razijidepafex.weebly.com/uploads/1/3/4/8/134891772/9912206.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410018/normal_601a2fb50b8b1.pdfIn PDF document text
- https://nuzozixajalupik.weebly.com/uploads/1/3/0/7/130739607/12183c1b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501514/normal_5fe75c194dab7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415081/normal_603ec8a9b5c7a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4390097/normal_5fe09160a0db4.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://feedproxy.google.com/~r/wb/ENAH/~3/vAIYpVcV8Aw/wb?keyword=how%20to%20open%20bostitch%20electric%20stapler%2002210PDF link annotation
- https://2cc935b2-b854-4d3d-8499-e3bac5ec7384.filesusr.com/ugd/2e82fc_2cd50531880f4ccbb9cccadee32934ed.pdf?index=trueIn PDF document text
- https://71b4061d-0fbe-47a8-a671-08758978b022.filesusr.com/ugd/0216f2_0342dee7f57a4c03b9700e82eecaf0e7.pdf?index=trueIn PDF document text
- https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_f5fcb0ac29cc410ea80f924f8b0fedd6.pdf?index=trueIn PDF document text
- https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_130f4395660e4ca2a5d35414ef98d80a.pdf?index=trueIn PDF document text
- https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_e43534cb03ea411eb7a4239aed794a7a.pdf?index=trueIn PDF document text
- https://7e079b21-6cfc-4bbc-a8af-001f4930a7f2.filesusr.com/ugd/f66805_a95c4438bc88482c84b1c264363c534e.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ca00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA00 | 5328 bytes |
SHA-256: c3212a4bac972db3dbf4c3e7eaba0e16bc1213bfa93bb37ca5adb4085d25a4fc |
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font_01_sfnt_off0000dc15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC15 | 11304 bytes |
SHA-256: 2150d1b8dd632c0c2802a5744835a7351a7b5e58c1bdc09c09333dece0e3f1fc |
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font_02_sfnt_off0001019a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1019A | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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