MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially garbled, includes text related to joining PDF files and mentions the wkhtmltopdf tool, suggesting a lure to disguise malicious activity. 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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://ttraff.ru/pify?keyword=joindre+plusieurs+fichiers+pdf+en+un+seul In PDF document text
- http://files.rueckkehrzentrenschliessen.org/uploads/1/3/0/7/130739393/wesiguxan-saxanopirupox.pdfIn PDF document text
- http://files.uusantafe.org/uploads/1/3/1/3/131379590/9431122.pdfIn PDF document text
- http://files.littlefollowersdaycare.com/uploads/1/3/1/8/131871852/kazewino_povuwolegami_roxosaka.pdfIn PDF document text
- http://files.kelbryfashions.com/uploads/1/3/0/7/130738892/5487628.pdfIn PDF document text
- http://lazuxuvaw.motiv8ed2bfit.com/uploads/1/3/0/8/130874330/nukiwazoz.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7938/4731/files/vekasutulejikizavikuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9680354999.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5820/0729/files/sovukojireroluboranuside.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4976/3494/files/29224131202.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2823/4908/files/rusoparusukotile.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2468/7014/files/cod_waw_mod_menu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3070/8385/files/nurobapisiri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0118/3384/files/12544954714.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8693/0329/files/antibiotics_list_with_their_uses.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/driver_power_state_failure_windows_10.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7414/1864/files/minecraft_walls_server_pe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60561448525.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0521/3847/files/oblicza_geografii_atmosfera_sprawdzian.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_off000074db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74DB | 5024 bytes |
SHA-256: 35c8f395afbfd0d30d834a92cf6c76ebb9adf10a27cac2d2da05b55ebdb165b8 |
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font_01_sfnt_off000085ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x85EF | 11668 bytes |
SHA-256: fd36a7c3e447f1e87244c1044bd53a53b6add43c9393f8306cad2a04ee2a14e0 |
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