MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits a PDF link farm, suggesting an attempt to game search engines or distribute malicious links broadly. The presence of a 'download button' heuristic further supports a lure-based attack. The primary malicious IOC is the redirector URL, which is likely the entry point for a subsequent stage of the attack.
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/wb?keyword=design%20builder%20user%20manual In PDF document text
- http://files.johb.org/uploads/1/3/1/4/131438427/xudalimefu.pdfIn PDF document text
- http://files.schoolofmythsanddreams.com/uploads/1/3/1/4/131407565/widomutadejan.pdfIn PDF document text
- http://files.srmsmusic.com/uploads/1/3/0/7/130738565/9893736.pdfIn PDF document text
- http://files.fhcamd.org/uploads/1/3/1/6/131637034/5932877.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/1/0431/0233/9232/files/61425470909.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2052/5476/files/86116709737.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7328/2983/files/39695303219.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2417/0664/files/kixidisa.pdfIn PDF document text
- https://pimudan.files.wordpress.com/2020/07/gusidalunemakafaloj.pdfIn PDF document text
- https://nibajeni.files.wordpress.com/2020/06/75119003589.pdfIn PDF document text
- https://lurevaxi.files.wordpress.com/2020/07/gexivominexumukodiwowa.pdfIn PDF document text
- https://wajuzuk.files.wordpress.com/2020/07/43832748408.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2045/1997/files/38225188555.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5404/7137/files/76317526405.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/89665223948.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5726/7359/files/98391808709.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5643/0230/files/timogibe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5689/0013/files/pufuwokuxowabediti.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_off00007e80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E80 | 4976 bytes |
SHA-256: 891a149efea15fe49515e55a1fc11e1a9eeb5bb3710129dfb0a68b2c97c52ed8 |
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font_01_sfnt_off00008f37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F37 | 10748 bytes |
SHA-256: 17f858ed3a447de34b72abb7e5a1599490a6b3cc9e563c9aa2efce9ae4c1139b |
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