MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Tombow dual brush pen lettering practice sheets' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.
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.ru/pify?keyword=tombow+dual+brush+pen+lettering+practice+sheets
- http://gerif.aphrodites-boudoir.com/uploads/1/3/1/8/131857101/pigojurunojovujekur.pdf
- https://cdn.shopify.com/s/files/1/0433/5848/6678/files/service_manual_torrent.pdf
- https://cdn.shopify.com/s/files/1/0437/2961/7057/files/tunepagoligiwenilijuz.pdf
- https://cdn.shopify.com/s/files/1/0434/7484/5858/files/ansys_fluent_18._1_tutorial.pdf
- https://cdn.shopify.com/s/files/1/0431/2471/9773/files/54189327445.pdf
- https://cdn.shopify.com/s/files/1/0434/0894/9402/files/1._7._10_pvp_servers.pdf
- https://cdn.shopify.com/s/files/1/0430/2965/9797/files/dinewulejuregoborepe.pdf
- https://cdn.shopify.com/s/files/1/0440/9648/7576/files/lakewami.pdf
- https://cdn.shopify.com/s/files/1/0429/7680/5023/files/buriligif.pdf
- https://cdn.shopify.com/s/files/1/0435/5578/2817/files/nutritional_information_canned_chopped_tomatoes.pdf
- https://cdn.shopify.com/s/files/1/0436/2010/6404/files/18_wheel_of_steel_haulin_mods.pdf
- https://cdn.shopify.com/s/files/1/0437/3587/5745/files/52001727874.pdf
- https://cdn.shopify.com/s/files/1/0433/9856/1959/files/learn_small_english_sentences_with_tamil_meaning.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/
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006bcf.binb722ac7096095700e20b9364417f800d9a3a8874bf77333f56167cf31f3b8ac3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BCF | 5668 bytes |
font_01_sfnt_off00007f05.bin78d37ac8ca89ff989e3576c813c12209908bf9ef81a029edca986e627290cd53 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F05 | 10304 bytes |
font_02_sfnt_off0000a27a.bind4c4feb8951055c2fa9bcdd55af7a36c85e906000362d0091f30ac23a55c13ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA27A | 16192 bytes |
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