MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=chuy%25E1%25BB%2583n+file+%25E1%25BA%25A3nh+pdf+sang+word', is identified as malicious. The presence of a 'download button' lure further supports the attack pattern of social engineering users to click malicious links.
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=chuy%25E1%25BB%2583n+file+%25E1%25BA%25A3nh+pdf+sang+word In PDF document text
- http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.pdfIn PDF document text
- http://wovufer.jamesdeanartifacts.com/uploads/1/3/1/6/131637016/985364.pdfIn PDF document text
- http://files.mcsspreschool.ca/uploads/1/3/1/4/131406662/0719c41e0c0e6b3.pdfIn PDF document text
- http://files.childrenscauseoc.org/uploads/1/3/1/4/131454049/4385819.pdfIn PDF document text
- http://files.jhsbigredband.org/uploads/1/3/1/4/131453132/7276386.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/1/0433/5593/0783/files/everything_everything_nicola_yoon_english.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6263/2360/files/diet_plan_for_flat_stomach_in_2_weeks.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8770/7804/files/xokunise.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5665/9621/files/acidose_lactique_diabte.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7400/2837/files/fukodusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5505/4999/files/57841050372.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1210/4103/files/zomalovubodadoromi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2698/7680/files/mepurogopowozukopa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8976/5276/files/68474101155.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5633/9871/files/duvajekigadogar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1171/8820/files/jeloz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wofizafadunemewu.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000089ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89EC | 5876 bytes |
SHA-256: 450caccb55a76b5f787cfd428600b3bd9ce855222591668b599a8eb778502ecb |
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font_01_sfnt_off00009d2f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D2F | 11832 bytes |
SHA-256: 5d22db214453ed300cf9cb8a9ed9ead7266053e52d434ac8907f3b3f0844a83e |
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