MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is further disguised by a seemingly benign document title related to pulse oximetry. The presence of a 'download button' heuristic suggests a social engineering lure to encourage clicks. No scripts were extracted, but the primary attack vector appears to be a link-based redirection to a malicious site.
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=pulse+oximetry+normal+range+pdf In PDF document text
- http://files.itsbendybo.com/uploads/1/3/1/4/131437444/vuxoxeditepifel-dajerolapanaxoz-nizinomimafikel-buxowejakoweka.pdfIn PDF document text
- http://files.garrettmichaelmccann.com/uploads/1/3/0/8/130814208/176015a.pdfIn PDF document text
- http://jotod.pabritishcar.com/uploads/1/3/1/3/131383483/fadiloxonovev.pdfIn PDF document text
- http://files.gtvip.co/uploads/1/3/2/3/132303351/rebixegivatij.pdfIn PDF document text
- http://rujumija.snokingmetals.com/uploads/1/3/1/4/131437361/dubugijubemujaguwili.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0431/0512/4503/files/90834697066.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9597/3283/files/texokejedo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1637/8773/files/61934792871.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7404/4579/files/49437035092.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9592/4637/files/5504471074.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2762/6144/files/sadness_and_sorrow_chords_piano.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4958/2743/files/53969656727.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7656/6684/files/diwumenaso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0097/7816/files/shoulder_muscles_anatomy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4405/2898/files/99822493246.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/7246/0702/files/wireborebezelupajuvek.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008651.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8651 | 5416 bytes |
SHA-256: c0f4e8f423df9c0f59ce29a19edb58ada174bd0ea2248a717a9f9208083a37d3 |
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font_01_sfnt_off000098b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98B0 | 14904 bytes |
SHA-256: d8797708cbeb08b0c37feb7f56c9501a3d5de62c96e06965d7bda536b337ed33 |
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font_02_sfnt_off0000c702.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC702 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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