MALICIOUS
262
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a general flagging by an ML classifier. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract users searching for specific software. The presence of a 'download button' lure and a request for 'recovery secrets' strongly suggests a phishing or scam attempt aimed at tricking users into downloading malware or revealing sensitive information.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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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=kakaotalk+apk+for+blackberry In 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/5fd5c1_15a57881b5864bb4a278117ecd03a430.pdfIn PDF document text
- https://static.usrfiles.com/ugd/1e11d0_0255a83bf606440b98abfe65c4610410.pdfIn PDF document text
- https://static.usrfiles.com/ugd/69695d_766848e065ce4acb811341a106c765cb.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_a644aabf54cd4891aee24555feb8c015.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_ca7214c10c1b47438db081708e9ff2ce.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_8d6d05ba13cc4be48b865d1ca7e988b5.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3802/3592/files/22243279297.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4571/6129/files/desivuxonogumuwazinebeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2382/6085/files/cipp_c_study_guide.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ea2c45_08d01871c8484f12a3486ce3ed359272.pdfIn PDF document text
- https://static.usrfiles.com/ugd/cc15ef_807c1dda1a394afca90cd7a86aa04017.pdfIn PDF document text
- https://static.usrfiles.com/ugd/35f767_22249245264c44d7abc3ee75478b7cf4.pdfIn PDF document text
- https://static.usrfiles.com/ugd/1cc777_a8eab4cd033d4bf5a39a8d4cbf5368aa.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000064f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64F0 | 5104 bytes |
SHA-256: 12dffd1909dceb0ebf572421b38989e7d35ce07c5b2c7c1dc5eefc18afbc4074 |
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font_01_sfnt_off0000766c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x766C | 10344 bytes |
SHA-256: ba57fb598d8c050d2645a027e06e190d41d2a2bb673456a04f68d26cebd384cb |
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font_02_sfnt_off000099f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x99F7 | 16092 bytes |
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073 |
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