MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a significant number of embedded links, with 30 pointing to external PDF files hosted on cdn.shopify.com, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bilibili+blue+apk', indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the sheer volume of links and the presence of a malicious redirector are strong indicators of malicious intent.
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=bilibili+blue+apk In PDF document text
- http://fopiwo.globalpurposegroup.net/uploads/1/3/1/1/131164291/752611415c8b.pdfIn PDF document text
- http://files.brittanyrhager.com/uploads/1/3/1/4/131454024/3c4859331019.pdfIn PDF document text
- http://tunap.pdxmusicminister.com/uploads/1/3/1/8/131856772/0c4746e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9137/7828/files/denusabupor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8535/7463/files/ischemic_stroke_definition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4339/6506/files/dixalinalevulajavaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8669/0969/files/51592491166.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5178/5109/files/59661568194.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5631/7091/files/13410916251.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2940/5600/files/83946603454.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9074/7295/files/finezowekakade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7600/1704/files/side_by_side_english_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9857/0909/files/accounting_ledger_software_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8099/7269/files/34529249537.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006838.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6838 | 15532 bytes |
SHA-256: 60ea86e1be948df9d3754af89b18c6e70a627a0104b31e71338d89102f6cc704 |
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font_01_sfnt_off00009a18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9A18 | 4792 bytes |
SHA-256: 9802216f6de3914e4a8d8f6d5fa06b549bab25caebd0cb1cb45cf39aeb8b05fc |
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font_02_sfnt_off0000aa74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA74 | 13856 bytes |
SHA-256: 1622ca4c505c39227f7a95c6993d58293833d8d6594d95671062c4e7f3de9a0f |
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font_03_sfnt_off0000d694.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD694 | 16832 bytes |
SHA-256: 15c1dba5fcb1cf46e5822d321c98407552b66fa43de2875a14985c3f85cfa2df |
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