MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a redirector, which is likely part of a phishing or malware distribution scheme. The document body and embedded links suggest a lure to download software, specifically 'Yowhatsapp 2018 free apk', which is a common tactic for distributing malware. The ML classifier strongly supports the malicious nature of this PDF.
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/wix?keyword=yowhatsapp++2018+free++apk
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/95089d_bf3f7f9f86b542ea9abab7929d20d987.pdf
- https://static.usrfiles.com/ugd/73f3b0_0ebfcc97e16f42abbca55b1ab8b9bfd4.pdf
- https://static.usrfiles.com/ugd/eda9ba_e94b2a3b78a24b378a12de1e5c66b2e0.pdf
- https://cdn.shopify.com/s/files/1/0437/2158/8888/files/3._standard_deviation_and_standard_error_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0432/0349/4043/files/pros_of_school_uniforms_statistics.pdf
- https://static.usrfiles.com/ugd/e7e4a0_1c3dce7b2dda41bb8bf25a100c476698.pdf
- https://static.usrfiles.com/ugd/b8c837_07c683f01f4c44509e102f304d117095.pdf
- https://static.usrfiles.com/ugd/4b874d_d1643670c7b243dd80414b77bcd33510.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8090/files/55002211107.pdf
- https://cdn.shopify.com/s/files/1/0434/8100/6246/files/34117723271.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000699e.binb611bfeada57651eaab14b8a34cace91b0d2e252633117c8c0847dba96483e4f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x699E | 5596 bytes |
font_01_sfnt_off00007cbf.bin8e4d952a8afe443d26d3c3c7a6b96dcc21f677ffe8ace1fe9bd95e5c7fca7d98 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CBF | 9980 bytes |
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