MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded URLs, many of which point to external PDF files hosted on disposable domains, indicating a link farm. One URL, 'https://ggtraff.ru/strik?keyword=estat%25C3%25ADstica+pr%25C3%25A1tica+para+cientistas', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The primary purpose appears to be SEO manipulation or distributing malicious content via these numerous links.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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/strik?keyword=estat%25C3%25ADstica+pr%25C3%25A1tica+para+cientistas In PDF document text
- http://files.hampshire-epc.co.uk/uploads/1/3/0/8/130814675/tivodeme.pdfIn PDF document text
- http://files.mybackyardbuilder.com/uploads/1/3/1/6/131636886/gamawosunuxa_detimemewuwix.pdfIn PDF document text
- http://files.ryangardnerjewelry.com/uploads/1/3/0/9/130968976/kidufirugodagu-pewekapaga-podamuf.pdfIn PDF document text
- http://files.willisproperty.com/uploads/1/3/1/4/131438113/1315786.pdfIn PDF document text
- http://wagamode.larklandsroofing.co.uk/uploads/1/3/2/8/132815986/1460867.pdfIn PDF document text
- http://gokukave.spirithorsetrc.org/uploads/1/3/1/3/131383657/1811005.pdfIn PDF document text
- http://files.manbugpottery.com/uploads/1/3/1/3/131379820/bepifolenigata.pdfIn PDF document text
- http://dekaf.cvillehomeimprovements.com/uploads/1/3/2/8/132814930/bifoxup.pdfIn PDF document text
- http://wirafal.urasenkeurbana.org/uploads/1/3/2/6/132695671/6566050.pdfIn PDF document text
- http://files.shoplovebella.com/uploads/1/3/2/3/132303147/zimik-diveravefivakuw.pdfIn PDF document text
- http://files.mcdugals-woodworks.com/uploads/1/3/0/7/130739949/7e842b5029f3a4.pdfIn PDF document text
- http://files.wartburgcentralfccla.com/uploads/1/3/1/4/131438308/tibugijoxi-mujutulaj-lazina.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
- https://cdn.shopify.com/s/files/1/0482/8335/3250/files/death_stranding_legend_of_legends_trophy_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/7107/8052/files/nibasobafakekipog.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/4293/3402/files/7475716259.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/5485/3027/files/inow_home_portal_wilcox_county.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/2513/2452/files/teddy_bear_cholla_adaptations.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://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_off00007355.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7355 | 4820 bytes |
SHA-256: c66a83f7dab6edf0adcaa1b6b365b24cf28c9c2d260c94272ca206147b7213cb |
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font_01_sfnt_off0000831c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x831C | 13824 bytes |
SHA-256: 944806458c5cf50cc2f4a4d04132f58b534e2dc043ac8e12482a24f0ac4ca351 |
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font_02_sfnt_off0000ab0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB0B | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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