MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link to a redirector URL, which is a strong indicator of malicious intent, likely to lead users to a phishing or malware download site. The document body, though heavily obfuscated, contains keywords related to 'tutorial google classroom 2019 pdf', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links, many pointing to benign Shopify URLs, suggests a link farm or SEO manipulation tactic to improve the ranking of the malicious redirector.
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=tutorial%20google%20classroom%202019%20pdf
- http://files.fragmentapp.info/uploads/1/3/1/4/131454567/wediduvu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/3757/9674/files/new_venture_gear_3500_transmission.pdf
- https://cdn.shopify.com/s/files/1/0435/7108/5475/files/brainstorming_exercises.pdf
- https://cdn.shopify.com/s/files/1/0431/0210/9856/files/51387286328.pdf
- https://cdn.shopify.com/s/files/1/0429/5183/5801/files/psychology_8th_edition_gleitman.pdf
- https://cdn.shopify.com/s/files/1/0429/6753/1673/files/zedikebibuvo.pdf
- https://cdn.shopify.com/s/files/1/0431/2255/7082/files/81804473350.pdf
- https://cdn.shopify.com/s/files/1/0431/5847/0816/files/phoneclaim_sprint_uploader.pdf
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/jusenajapadowizuni.pdf
- https://cdn.shopify.com/s/files/1/0434/0737/6546/files/axum_obelisk.pdf
- https://cdn.shopify.com/s/files/1/0455/3906/6021/files/xukepalonav.pdf
- https://cdn.shopify.com/s/files/1/0440/2806/7990/files/72487301984.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_off00006830.bind2cce78836013783ed13672d0798764186eb8739b98ba31e69216ca8994a06d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6830 | 5908 bytes |
font_01_sfnt_off00007c3a.bin89f482bf169942b8d6c600e2686d5a15dc40cffbee70fe02d18faedff5ee03bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C3A | 10440 bytes |
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