MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to domains that appear to be part of a link farm. One prominent link redirects to `https://ttraff.ru/wb?keyword=community%20medicine%20park%2025th%20edition%20pdf`, which is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains text and URLs that suggest a lure for downloading a PDF, likely to lead to further malicious activity.
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=community%20medicine%20park%2025th%20edition%20pdf
- http://files.ryanstander.com/uploads/1/3/1/4/131454850/gilotew.pdf
- http://files.domaplasma.com/uploads/1/3/1/1/131164534/gifuwubumip.pdf
- http://files.mashed-up.net/uploads/1/3/2/8/132814239/lelorepenu.pdf
- http://files.jasminesholisticcenter.com/uploads/1/3/0/7/130740232/pirasisokovaforibifa.pdf
- http://files.stribbledistrict.com/uploads/1/3/1/8/131856430/8390719.pdf
- http://files.awardmusic.biz/uploads/1/3/2/8/132814239/ce8346bdc25fa.pdf
- http://files.wunetserve.com/uploads/1/3/2/6/132696263/tezubetezegeto.pdf
- http://files.well-estar.com/uploads/1/3/1/6/131637034/91a0067.pdf
- http://files.eastsidepearl.org/uploads/1/3/2/7/132740398/2014968.pdf
- http://files.bupiercing.com/uploads/1/3/2/7/132740398/65fc2eb6dd2.pdf
- http://files.zionhillbrookshire.org/uploads/1/3/1/1/131163563/silararitipu.pdf
- https://kusefujavo.files.wordpress.com/2020/07/sikotikadamebapuden.pdf
- https://xewilukon.files.wordpress.com/2020/07/84491204590.pdf
- https://pulixaxokuk.files.wordpress.com/2020/06/womobajalom.pdf
- https://pubizise.files.wordpress.com/2020/07/816000257.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_off00005825.bin78ac03774064361e60f0f6a148f03040ebc5f7883c87abe21b17da14cea1121d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5825 | 5512 bytes |
font_01_sfnt_off00006ace.bindedaadc76477891ba799c53fe026889d7c75ad1a42984ab7a26ca510304810a9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6ACE | 10408 bytes |
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