MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file exhibits malicious behavior through a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.ru/pify?keyword=book+to+learn+mandarin+pdf'. Additionally, it contains a PDF link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, with numerous links to external PDFs hosted on platforms like shopify.com. The presence of a visual download button lure further suggests an attempt to entice user interaction. The primary intent appears to be directing users to malicious or deceptive content via these links.
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=book+to+learn+mandarin+pdf In PDF document text
- http://files.anitashackelford.net/uploads/1/3/1/4/131438459/dipixuxi-mosafatamij-xanetubovu.pdfIn PDF document text
- http://files.itanecoleman.com/uploads/1/3/1/4/131437318/3061225.pdfIn PDF document text
- http://files.challengethewind.org/uploads/1/3/2/6/132681464/kukusagaxenizokek.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/1/0434/3519/6566/files/71464844332.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8334/2748/files/lazowedoxakodujimovopajod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2784/9639/files/zapinaduwiruzuxekikifole.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5791/3757/files/lexutopigutoxez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3302/5960/files/area_of_different_shapes_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4545/2967/files/72392023830.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1717/3152/files/fesuzibesuvenomola.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4853/2128/files/lemesesiwubulaluje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6982/4414/files/37470632124.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/84261796496.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2846/3271/files/cricut_user_manual.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000086e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x86E8 | 3192 bytes |
SHA-256: fe621318fd43f98f2b9861dab3fd5f4d835544ed56eefa01881a0bef0ef883d5 |
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font_01_sfnt_off00009257.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9257 | 5124 bytes |
SHA-256: 509378b4daa5230b4de4c4c07e2645593fba85955c5e18ce2602097281794341 |
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font_02_sfnt_off0000a3b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA3B2 | 10008 bytes |
SHA-256: 3604c16eff4204f8618ad4207fe0c7daa782233a7c9376a383a131414013dbf9 |
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