MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'formal and informal email writing pdf' and the wkhtmltopdf application, suggesting a lure to disguise the malicious links. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports the malicious intent of redirecting users to potentially harmful content.
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/pify?keyword=formal+and+informal+email+writing+pdf
- http://files.allendaleinsurance.com/uploads/1/3/1/6/131607163/mupevojizamufowike.pdf
- http://files.esteefilm.com/uploads/1/3/0/8/130874477/nanipe.pdf
- http://files.truromass.org/uploads/1/3/1/8/131856247/7500713.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdf
- https://cdn.shopify.com/s/files/1/0431/0705/7825/files/alkenes_and_alkanes.pdf
- https://cdn.shopify.com/s/files/1/0435/2717/6344/files/wejiritadididuzo.pdf
- https://cdn.shopify.com/s/files/1/0427/8799/5807/files/dagevosotubikopow.pdf
- https://cdn.shopify.com/s/files/1/0437/6153/3089/files/disoganewer.pdf
- https://cdn.shopify.com/s/files/1/0429/8833/9354/files/pupuxanuz.pdf
- https://cdn.shopify.com/s/files/1/0433/3076/4968/files/pokugalazupeviwufarosa.pdf
- https://cdn.shopify.com/s/files/1/0431/7180/7391/files/28967935158.pdf
- https://cdn.shopify.com/s/files/1/0430/2834/9079/files/fukixewidogeruwipadup.pdf
- https://cdn.shopify.com/s/files/1/0438/4168/3618/files/vawunugomazukiriz.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000064f7.bin5f764f1f2d5cbc09c52a293cbc9afbf60398d007c2493f412ac054d74392a203 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64F7 | 5016 bytes |
font_01_sfnt_off000075f7.bin44d9d3243cb26433e40eb81a4352eec69c20f63f80078400ebb21fbc2a1c115e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75F7 | 10236 bytes |
font_02_sfnt_off000098c2.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98C2 | 4324 bytes |
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