MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains multiple links, including one pointing to a known malicious redirector. The presence of a 'download button' heuristic and the embedded URL suggest a social engineering lure. The document body, though heavily obfuscated, contains text related to counting worksheets, likely a pretext to encourage clicks on the malicious 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/wb?keyword=counting%20numbers%20for%20kids.%201%20to%20100%20worksheet In PDF document text
- http://files.columbiapresbyterianchurch.com/uploads/1/3/0/9/130968961/1614375.pdfIn PDF document text
- http://files.antigonekoutalieri.com/uploads/1/3/1/4/131408572/gonijugagoba.pdfIn PDF document text
- http://files.creationjustice.org/uploads/1/3/2/3/132302833/2714242e.pdfIn PDF document text
- http://files.wefightforfood.com/uploads/1/3/0/7/130740257/jizase.pdfIn PDF document text
- http://files.soulbloom.org/uploads/1/3/1/3/131379402/8638775.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/1/0430/4489/6917/files/76366806475.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3770/4867/files/51198548577.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8580/0358/files/78650841932.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6971/8182/files/xuxozogiju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9826/0124/files/mamineposib.pdfIn PDF document text
- https://gubudifoxino.files.wordpress.com/2020/07/jinapeloxevimerosipefu.pdfIn PDF document text
- https://serifutaje.files.wordpress.com/2020/06/66089915439.pdfIn PDF document text
- https://nojilibap.files.wordpress.com/2020/06/jotiwuraruvim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1864/7709/files/fiporekozos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2280/3363/files/dikazofe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5921/6537/files/38363985785.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3803/1518/files/jojobowupuletoje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6483/5737/files/libiziwitewobujagum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0645/2127/files/69229232498.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2729/1544/files/dokuriserod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9041/9620/files/tazagorafir.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_off0000735b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x735B | 5508 bytes |
SHA-256: 6992211a505b4b87345325c0199b4d83f0b719ae34aafaa144f1940c08cde24a |
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font_01_sfnt_off0000860e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x860E | 9892 bytes |
SHA-256: 656c1cd2e4de3adf6717bc7cd96d7cfb735c3105d12be49875772390c2315190 |
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