MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The ML classifier strongly indicated maliciousness, and the document body, though obfuscated, contains text related to 'Chronicle magazine pdf april 2019' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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/wb?keyword=chronicle%20magazine%20pdf%20april%202019
- http://files.muslimpraynplay.com/uploads/1/3/1/0/131070820/a5e61ff.pdf
- http://files.singingsabercats.com/uploads/1/3/0/7/130776661/sisukoxarepe-nisikurigeged.pdf
- http://files.jerseyshorechefs.com/uploads/1/3/1/4/131406427/124f5.pdf
- http://files.actscommunitychurches.com/uploads/1/3/1/3/131378990/c357339a.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
- https://cdn.shopify.com/s/files/1/0434/3519/6568/files/dirot.pdf
- https://cdn.shopify.com/s/files/1/0433/4950/8246/files/12858074139.pdf
- https://cdn.shopify.com/s/files/1/0431/1715/0368/files/caiib_risk_management_notes.pdf
- https://cdn.shopify.com/s/files/1/0440/8557/5832/files/hall_of_fame_piano_sheet_music_free_download.pdf
- https://cdn.shopify.com/s/files/1/0434/2172/8918/files/fezutuwilenajawugoxodova.pdf
- https://cdn.shopify.com/s/files/1/0432/5654/5433/files/vukafedemakumogusarotagas.pdf
- https://cdn.shopify.com/s/files/1/0430/3283/8298/files/60968887268.pdf
- https://cdn.shopify.com/s/files/1/0433/2394/9224/files/nijaji.pdf
- https://cdn.shopify.com/s/files/1/0432/8243/2160/files/myers_briggs_personality_test_free.pdf
- https://cdn.shopify.com/s/files/1/0434/0498/4483/files/56765658940.pdf
- https://cdn.shopify.com/s/files/1/0428/3557/4943/files/79687307344.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000041b9.binf057355b95084ba8ee65cbaa1e075a91f4c9a639aff934c5b90486e1c87bbfd7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x41B9 | 5828 bytes |
font_01_sfnt_off00005571.bine95feba24b50f62c34cb89acf6c5c60c078b26fbb9281b1adf524911e7116a4b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5571 | 8880 bytes |
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