MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'voice synth vst free' and a URL that appears to be a lure for a free download. The presence of a download button heuristic further supports this. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt 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.ru/pify?keyword=voice+synth+vst+free In PDF document text
- http://files.silvertonffa.com/uploads/1/3/2/7/132740186/niwajexotananes_fapiwewuliz_dirupetik_lasomofoj.pdfIn PDF document text
- http://files.mrsdawson-classroom.com/uploads/1/3/1/3/131380213/82ad8784c19aade.pdfIn PDF document text
- http://files.avcov.net/uploads/1/3/1/4/131437701/fifibura.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/1/0431/7220/0608/files/nuwop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/0011/3813/files/23543539634.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3960/3360/files/67654678396.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2756/8552/files/56941822336.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9784/1054/files/aqualink_rs4_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0521/3846/files/95416857717.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7082/5382/files/34867516221.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5804/4823/files/medical_fitness_certificate_format_students.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6072/3865/files/xaputuxavaji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2073/0020/files/33137314205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5584/0422/files/20329395772.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5323/4841/files/english_russian_dictionary_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6195/9069/files/94085699356.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_off00006e22.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E22 | 4852 bytes |
SHA-256: 7225ae5cb7faae5b39a096174f7a170d1beb3a3b3f88ad52b440ea606aea09f2 |
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font_01_sfnt_off00007ea5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7EA5 | 10420 bytes |
SHA-256: 04c21a0af4105631ef2e32c1a430fd5c472237254bc950d5de547b274d14a12a |
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