MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=upsc+cds+2+2020+question+paper+pdf`. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains references to 'Upsc cds 2 2020 question paper pdf', suggesting a lure to disguise malicious activity. The ML classifier strongly flagged this PDF as malicious.
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=upsc+cds+2+2020+question+paper+pdf
- http://files.gildatgarbanzos.org/uploads/1/3/2/6/132681474/aef2e7f82.pdf
- http://fuduxate.mystreetstamp.com/uploads/1/3/1/0/131070849/vezujele_kimowipemasez_biluvijafam_dafiroje.pdf
- http://files.sydneyinsightmeditators.org/uploads/1/3/1/3/131381976/1be572.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/5742/2229/files/delimuke.pdf
- https://cdn.shopify.com/s/files/1/0435/6964/3675/files/bubble_tanks_unblocked.pdf
- https://cdn.shopify.com/s/files/1/0433/4639/5304/files/3000849971.pdf
- https://cdn.shopify.com/s/files/1/0433/7182/3262/files/47666645843.pdf
- https://cdn.shopify.com/s/files/1/0433/4718/1718/files/68987099800.pdf
- https://cdn.shopify.com/s/files/1/0432/8167/8494/files/22190018632.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdf
- https://cdn.shopify.com/s/files/1/0431/7236/4437/files/rumaviwupeziwenugamibu.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/google_sheets_duplicate_row.pdf
- https://cdn.shopify.com/s/files/1/0435/7593/5135/files/jorujomodilerimawimobub.pdf
- https://cdn.shopify.com/s/files/1/0434/1510/9794/files/nupurugewi.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_off00005c42.bin70a09078c8f2e57c985630035feab20f0273d6cdff3e072e51b61f6d87252f76 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C42 | 5508 bytes |
font_01_sfnt_off00006f0b.bincc5862cf98bad98e44462b7fd213a08ccbf2d1b7dbc04ecc306e6acd60115c5f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F0B | 10472 bytes |
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