MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains multiple heuristics indicating malicious redirection and link farming, including a critical finding for PDF links to known malicious redirector infrastructure. The document body, though obfuscated, contains a URL that points to a redirector, suggesting an attempt to download a second-stage payload. The presence of numerous external PDF links further supports a malicious intent to distribute further 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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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.com/pify?keyword=zalo+m%25E1%25BB%259Bi+nh%25E1%25BA%25A5t+cho+pc In PDF document text
- http://fizuzepiz.partainsenglishclass.com/uploads/1/3/0/7/130775732/4686999.pdfIn PDF document text
- http://files.phinedesign.store/uploads/1/3/1/3/131383657/gizekazavaxokasuzasu.pdfIn PDF document text
- http://files.deyrecreativedesignsexpressions.com/uploads/1/3/1/0/131070313/lomijubuwiwudop_nudemifutobovo.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/1/0434/7972/8281/files/21493539403.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2961/1171/files/atomx_virtual_dj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5407/9910/files/arduino_android_app_tutorial.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3622/9278/files/79867383084.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3141/3414/files/bebegeditol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3346/7808/files/fe_warriors_characters.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0105/2323/files/9318700855.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4451/1645/files/gederomuvugowakobosak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1734/6965/files/arifureta_light_novel_vol_9.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9988/1639/files/size_36c_breasts.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7341/4055/files/viwexosarekit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3241/0272/files/politique_linguistique_dfinition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2629/0587/files/21050709346.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_off00006aab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6AAB | 5280 bytes |
SHA-256: ab26f5e3fb9228aa5115e1bbef97f188fee979bfd46b3e52c3c69b10362ef4a6 |
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font_01_sfnt_off00007bd8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BD8 | 10352 bytes |
SHA-256: 9c25760bbfadcbb73663c09246ff2054480c28a694546c9477e2814cc9a99031 |
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