MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to benign educational content, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a tactic to disguise malicious activity within a larger link farm, potentially to evade detection or to appear as a legitimate resource. The document body itself is heavily obfuscated and contains the malicious URL, indicating an attempt to lure the user to the redirector.
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/wb?keyword=principles%20of%20forensic%20toxicology%20levine%20pdf In PDF document text
- http://files.swissmobileveterinaryclinic.com/uploads/1/3/1/0/131071256/cf3aedec28e6.pdfIn PDF document text
- http://files.formalpoetryetc.com/uploads/1/3/1/4/131406977/zariv-ziteka.pdfIn PDF document text
- http://files.qualityparks.org/uploads/1/3/2/7/132712185/6916194.pdfIn PDF document text
- http://files.ptti.org/uploads/1/3/2/6/132695569/0f79de8284.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/1/0435/9503/8877/files/4th_grade_math_word_problems_worksheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0087/3631/files/46888714435.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1939/3448/files/devomositovesi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2737/2964/files/drake_if_youre_reading_this_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8442/1022/files/additive_inverse_worksheet_7th_grade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3624/4118/files/zukuwali.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7441/0910/files/kosalorufalin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7929/3338/files/28901633027.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2068/9306/files/soxuvovixivaxuduja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6933/3916/files/isaiah_berlin_four_essays_on_liberty.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1434/8197/files/pufudagobomupaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7932/6103/files/56010294964.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_off000058c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58C1 | 5132 bytes |
SHA-256: c17bf972607eb9595ffce960427ecc9436ed86abd03154cff199c0c184da46bb |
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font_01_sfnt_off00006a4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A4A | 10776 bytes |
SHA-256: 166687f5dbe7ed781f623d8c5e273a71d35e4b7a8136cdeee5c943bcc2ac3eee |
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font_02_sfnt_off00008f38.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F38 | 16148 bytes |
SHA-256: 1a2b76eb92621148de57a48589384f2ed1ce1add53d2a8f9a0414c0ea737f4f8 |
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font_03_sfnt_off0000a431.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA431 | 4324 bytes |
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
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