MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many pointing to disposable hosting and one specifically to a known malicious redirector. The document body, though garbled, contains text related to a book title and URLs, suggesting a link farm designed to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.
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://traffmen.ru/123?keyword=business+in+action+7th+edition+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4371267/normal_5f988162369cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424027/normal_5f9c3035d737a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05292078-daac-4f9a-85bf-c746c9414cbc/borderlands_2_mechromancer_dlc_free_download_xbox_360.pdfIn PDF document text
- https://zusepofofone.files.wordpress.com/2020/11/tudobuvenufulikizu.pdfIn PDF document text
- https://mipofasena.files.wordpress.com/2020/11/apset_model_papers.pdfIn PDF document text
- https://kuwibanaxar.files.wordpress.com/2020/11/98036189897.pdfIn PDF document text
- https://s3.amazonaws.com/banula/my_hero_academia_episode_52_dailymotion.pdfIn PDF document text
- https://suvarofora.files.wordpress.com/2020/11/95519257918.pdfIn PDF document text
- https://pavokido.files.wordpress.com/2020/11/pl_sql_tutorial_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/db4378d8-6e7c-490d-b1a4-6e6312ae41a0/89571288511.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005c2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C2B | 5244 bytes |
SHA-256: e7b3b9e4e6b87bd4e4b28a8d5613536998a3c342c7d678fcda2912f9f79be12a |
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font_01_sfnt_off00006e13.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E13 | 11036 bytes |
SHA-256: e6f0f43f92ca906ba93ff3498460ddaecf1b95658434e9ed366a3e9d2ae0f83d |
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