MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links to external PDF files, presented as '4th grade math summer review worksheets'. One of these links, 'https://ttraff.cc/pify?keyword=4th+grade+math+summer+review+worksheets', redirects to a known malicious infrastructure. The presence of a visual download button further supports the lure. The document body is heavily obfuscated but contains the malicious redirector URL and several other unknown PDF URLs.
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.cc/pify?keyword=4th+grade+math+summer+review+worksheets In PDF document text
- http://fusukako.mcnamaragypsies.com/uploads/1/3/1/4/131438500/f1410b439a3.pdfIn PDF document text
- http://files.feipol.us/uploads/1/3/1/4/131453432/7ed1646abdafe1.pdfIn PDF document text
- http://lobemugu.portorunningtours.com/uploads/1/3/0/8/130874134/bekozifubugukotep.pdfIn PDF document text
- http://lasexo.sacredsecretskincare.org/uploads/1/3/0/7/130740480/nofomesuxexo-xigiropigobew-zasariferek.pdfIn PDF document text
- http://files.joannapickering.com/uploads/1/3/0/8/130874676/bunegiwaba.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/1/0432/5543/1323/files/discrete_mathematics_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5037/6100/files/wwf_hasbro_checklist.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2585/8714/files/61315027950.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3917/8399/files/xebovu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/4429/6088/files/xilodegarizije.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8474/1798/files/tobiloxusaledorawigodo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1260/4582/files/sitododi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5305/5128/files/74423418411.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9139/2664/files/esh_esc_hypertension_guidelines_2020.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000628a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x628A | 5416 bytes |
SHA-256: 876ea826b297778b0cc9575d761789a908e36724f916218b6245e77db69ee76b |
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font_01_sfnt_off000074ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74EF | 10164 bytes |
SHA-256: 293ad5a69da822b0cd1bd671ce91331edde20ba6307a8b3dec12b473c7fab1b9 |
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font_02_sfnt_off00009806.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9806 | 16344 bytes |
SHA-256: a621aec183b732cee92364c4b6ebb2f7896bba754ee7de32553ecc0c53ce4f67 |
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