MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=chuy%25E1%25BB%2583n+pdf+sang+h%25C3%25ACnh+%25E1%25BA%25A3nh', which is also identified as a malicious redirector by heuristics. This suggests the document's primary purpose is to redirect users to malicious content.
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.com/pify?keyword=chuy%25E1%25BB%2583n+pdf+sang+h%25C3%25ACnh+%25E1%25BA%25A3nh In PDF document text
- http://files.mzstrong.com/uploads/1/3/1/4/131452922/deff2b0.pdfIn PDF document text
- http://files.casapinessuperherorun.com/uploads/1/3/0/9/130969489/9d813e1e.pdfIn PDF document text
- http://files.naleokakoo.org/uploads/1/3/1/6/131636828/lewisan-simukikon-dubugiwovub-busizelipu.pdfIn PDF document text
- http://files.thisdesperatecity.com/uploads/1/3/1/3/131384171/kajemasogoter.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/1/0434/4253/6598/files/phonetic_symbols_sounds.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1817/4120/files/kovutipev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9579/3571/files/tuvunopenowimiduloda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9252/4702/files/kizapufoxuw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6604/1244/files/fogigenuna.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4116/9303/files/1615690567.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6855/5415/files/bagavu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7565/6094/files/54205828498.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1447/1330/files/52690751154.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4950/8250/files/70806479273.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0161/8327/files/inverter_welding_machine_circuit.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
🗂 Part of campaign:
thisdesperatecity.com
5 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004ad5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4AD5 | 5712 bytes |
SHA-256: ea5e18839ec7305e78e64342a0651e2e8cbefdb9c13fda51e7163d1f5374fd4c |
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font_01_sfnt_off00005d84.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D84 | 11188 bytes |
SHA-256: 554d1d93fe34e3a1105e39e3991f8d1013ce845d157b98a5258d2eed941f28f0 |
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