MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily garbled, contains text that appears to be a lure for downloading a PDF, and the presence of a 'password-protected archive' lure suggests a multi-stage attack. The primary malicious URL is https://ttraff.cc/pify?keyword=c%25C3%25A1ch+t%25E1%25BA%25A1o+file+pdf+kh%25C3%25B4ng+cho+copy, which likely leads to further malicious content.
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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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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=c%25C3%25A1ch+t%25E1%25BA%25A1o+file+pdf+kh%25C3%25B4ng+cho+copy In PDF document text
- http://fefaj.naturalfeetfootzonology.com/uploads/1/3/0/7/130739625/nikezifure_fazamemumaf_xeginagulokiso_sasebisumazoja.pdfIn PDF document text
- http://pudejomek.kyocreations.com/uploads/1/3/1/3/131381464/6779484.pdfIn PDF document text
- http://files.magicmikelikey.com/uploads/1/3/0/7/130738524/vudexote.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/1/0430/6495/0945/files/vudakifogud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6113/2968/files/zexadawelanobozap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7750/9020/files/repavakezujomewutovekuxak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7870/4536/files/53111803567.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wowivitotorinu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1849/2824/files/33659856702.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1653/4685/files/pofiluvoninozam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5915/7921/files/zimasepezo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9496/6436/files/6332612789.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6341/9814/files/history_of_buddhism_in_vietnam.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_off000065a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65A6 | 5604 bytes |
SHA-256: ee1d816044d3748041132a2f233b4f3126caeb15e3811d6fae366609b53ceaf0 |
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font_01_sfnt_off000077fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x77FD | 9820 bytes |
SHA-256: 69a3360a37568c7928ea83443a2c4c942604a3e320b719946318c6ce44c059f5 |
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