MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a link to free educational worksheets. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm or SEO poisoning attempt. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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.com/wb?keyword=free%20noun%20worksheets%20for%205th%20grade
- http://files.cruzla.net/uploads/1/3/1/4/131453106/zufesig-rojerirated-dujikixuvoke-difimaf.pdf
- http://files.exploringteacher.com/uploads/1/3/0/8/130873708/1284844.pdf
- http://files.universitystemacademy.com/uploads/1/3/1/1/131164130/xireneboruzudar.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/7399/3890/files/81442869221.pdf
- https://cdn.shopify.com/s/files/1/0429/8083/5482/files/local_anesthesia_malamed_download.pdf
- https://cdn.shopify.com/s/files/1/0440/3747/2421/files/10285443878.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
- https://cdn.shopify.com/s/files/1/0448/3235/8560/files/assembler_des_en_un_seul.pdf
- https://cdn.shopify.com/s/files/1/0430/5040/1945/files/97035722380.pdf
- https://cdn.shopify.com/s/files/1/0430/7877/9029/files/26386059339.pdf
- https://cdn.shopify.com/s/files/1/0430/5872/5018/files/24226663147.pdf
- https://cdn.shopify.com/s/files/1/0434/2494/0184/files/slow_dancing_in_a_burning_room_guitar.pdf
- https://cdn.shopify.com/s/files/1/0428/4229/2390/files/28326805123.pdf
- https://cdn.shopify.com/s/files/1/0434/4922/1281/files/xetured.pdf
- https://cdn.shopify.com/s/files/1/0429/7188/9815/files/7070938844.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000069cc.bin75264c30e2197211f9dd5ff462817b14f1c7d61807e3180d2bdf82aa09aa7bd6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69CC | 5372 bytes |
font_01_sfnt_off00007c29.bincf7cda365646edf700b0b28b536512a19356a8603e5d47949c5b71c09fe43ed1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C29 | 10548 bytes |
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