MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for a free PDF download, which is a common tactic for phishing and malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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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/pify?keyword=stream+processing+with+apache+flink+o+reilly+pdf+download In PDF document text
- http://files.didsburyjuniors.com/uploads/1/3/2/6/132681824/maxipupamekep.pdfIn PDF document text
- http://files.madewithloverldesigns.com/uploads/1/3/0/7/130739517/sinarosum_sezipajuzox_kimekazitubus.pdfIn PDF document text
- http://files.the1diamondlifestyle.com/uploads/1/3/1/4/131453695/7052362.pdfIn PDF document text
- http://files.kazmetixartistry.com/uploads/1/3/0/8/130873855/8560475.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/1/0429/8774/9525/files/sunikosoxazajisanaxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0655/8359/files/46969477246.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3593/5398/files/64029634825.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1675/7153/files/muzuxewote.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6108/3301/files/84227853663.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7054/5308/files/goguxekirug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8111/2483/files/super_mario_nes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8360/3876/files/zilotesobopejanaxaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0258/5500/files/ubuntu_12._04_source._list.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9085/3541/files/kuxonuxilasoverovawol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5372/7387/files/vexifiwokafugava.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1279/2221/files/nintendo_ds_emulator_android.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005dcb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DCB | 5932 bytes |
SHA-256: 47318b37646f05043e31e8c0cd3a5f91de1691a2dbdc09d501a599d899c97cb7 |
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font_01_sfnt_off000071e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71E6 | 10368 bytes |
SHA-256: e8df5226f23e3b3a6d7d432c5e3663f6dd9814c9ecd903fab6fcea02ed02d2e3 |
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