MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious Link
T1566.002 Spearphishing Attachment
The PDF file contains a critical heuristic firing for a malicious redirector link, which is further supported by another critical heuristic indicating a link farm designed to host numerous external PDFs. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by the heuristics. The presence of a 'download button' heuristic suggests a social engineering lure to trick the user into clicking the malicious link.
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.club/wix?keyword=obb+apk+file In PDF document text
- http://files.steelin1.com/uploads/1/3/0/7/130739274/nujutozuwawug_rikoja.pdfIn PDF document text
- http://files.maizewallin.com/uploads/1/3/0/7/130775106/8667528.pdfIn PDF document text
- http://files.crosscountryfarm.net/uploads/1/3/0/7/130739971/4122b56a86.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/238140_f83d783132444fd0b5cfe64d70ef424a.pdfIn PDF document text
- https://static.usrfiles.com/ugd/2813e2_9e80ebcc029c446386382848616f8ab6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/50de67_95cc8b3693ef4519b9a4c6a6713eeee7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/762c1a_7e8d0f2e81d54425a7476173153417a8.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e6e573_50ccd0eabb2a429db9d1a5a80c08e0ab.pdfIn PDF document text
- https://static.usrfiles.com/ugd/185811_a4331634c8d444dd9c109b4d640c3c35.pdfIn PDF document text
- https://static.usrfiles.com/ugd/92ee2b_64ac2283459c4c8db641ce21e773562c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b7ed05_6065036828da4beb8345dd47a533fc84.pdfIn PDF document text
- https://static.usrfiles.com/ugd/595093_51ebf73136cf4a418490e8c80d69e51e.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1887/8104/files/5751887735.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1322/4094/files/81011741915.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8554/4089/files/16295095968.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0765/5579/files/cen-_tech_digital_multimeter_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5059/8562/files/51489514816.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_off0000e694.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE694 | 4852 bytes |
SHA-256: 5489f5fc660025680f67bd21ef69ef97520e35b4a32fd443f407d815529e3005 |
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font_01_sfnt_off0000f72f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF72F | 12988 bytes |
SHA-256: 55ab8e8cc9edd0338b4198bfa989f33fb8a38cca95b11182ca1d8e1ecae58722 |
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