MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains a lure document disguised as a calculus textbook solution manual. It embeds numerous links, including one pointing to a known malicious redirector at https://ttraff.ru/pify?keyword=stewart+calculus+7e+solution+manual+pdf. This redirector likely leads to a malicious payload or phishing page. The presence of a link farm suggests an attempt to game search engine results for malicious distribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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=stewart+calculus+7e+solution+manual+pdf In PDF document text
- http://files.vetmobileclinic.com/uploads/1/3/1/3/131398532/tabumokuwev.pdfIn PDF document text
- http://files.europeanmatchracetour.com/uploads/1/3/2/6/132682745/6515867.pdfIn PDF document text
- http://files.teamroadrunnerapp.com/uploads/1/3/0/7/130738803/28612afb0.pdfIn PDF document text
- http://files.elevateciereview.com/uploads/1/3/2/7/132741136/002fb9.pdfIn PDF document text
- http://files.holisticlifeabundance.com/uploads/1/3/1/8/131856392/566506fc3faefbb.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/1/0428/9835/8432/files/72710717911.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/mezadavufupowedu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8184/3353/files/pigaxok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7098/0245/files/giduzivimelowegeluva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4859/8678/files/zugoro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3131/4077/files/dekobemodevabazifaluribeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5382/6726/files/40856134824.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5901/2006/files/12916910043.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/36180352165.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9286/9281/files/bifamatejeza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7677/9174/files/jotin.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_off00007a8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A8C | 7560 bytes |
SHA-256: 1bbe662d7b7ab8dfd46870862d38de18d2312bfa85abb657c654ede8aed307ce |
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font_01_sfnt_off000093f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x93F0 | 5576 bytes |
SHA-256: 4797cd0fe46ac3b69480809fc711d82430f3d858fc6d3b7b5d98f9f9c6483812 |
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font_02_sfnt_off0000a6ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA6EC | 10212 bytes |
SHA-256: 204cae5dbfa9015332940134ce8a8899761e3af69f4ed137f96ea36d370527a2 |
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