MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Zarchiver pro apkpure' and a URL, suggesting a lure for downloading an application. The presence of a password-protected archive lure heuristic further indicates an attempt to conceal a payload. The ML classifier also flagged this PDF as malicious.
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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=zarchiver+pro+apkpure
- http://files.zsystemsorder.com/uploads/1/3/0/7/130739503/1818911.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/1714/2433/files/79382100511.pdf
- https://cdn.shopify.com/s/files/1/0432/3193/6674/files/3375025395.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdf
- https://cdn.shopify.com/s/files/1/0428/8184/3356/files/84608771998.pdf
- https://cdn.shopify.com/s/files/1/0430/7235/6505/files/sibiti.pdf
- https://cdn.shopify.com/s/files/1/0432/7355/2028/files/4118077381.pdf
- https://cdn.shopify.com/s/files/1/0452/0234/2037/files/economic_and_social_issues_for_rbi_grade_b.pdf
- https://cdn.shopify.com/s/files/1/0435/4542/8122/files/brother_printer_driver_singapore.pdf
- https://cdn.shopify.com/s/files/1/0435/1908/2655/files/vugesifevawafutos.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
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000787e.bin848407a0c875c82d4c903e3b69cd449b35ce410169e42b74d83679d13693c13a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x787E | 4892 bytes |
font_01_sfnt_off00008923.bin87374420af6443228141ae00c03e3a312809e717331548e905a4a4174476a72f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8923 | 10356 bytes |
font_02_sfnt_off0000ac9d.bin75e946b225aa6b4b55ab3e5a518bfcd20061ab3d93a9d21aaf366d4e54857459 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC9D | 16468 bytes |
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