MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to manipulate search engine results, directing users to a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wb?keyword=biology%20notes%20for%20class%2012%20chapter%20wise%20pdf%20hsc', which is flagged as malicious. The presence of numerous benign-looking Shopify links suggests an attempt to camouflage the malicious redirector within a larger set of URLs.
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.ru/wb?keyword=biology%20notes%20for%20class%2012%20chapter%20wise%20pdf%20hsc In PDF document text
- http://pagakamam.craftofscientificpresentations.com/uploads/1/3/0/7/130739385/4263c0.pdfIn PDF document text
- http://files.handsomestitchery.com/uploads/1/3/2/7/132712225/4365496.pdfIn PDF document text
- http://files.rangersafc.co.nz/uploads/1/3/0/7/130775135/bosese.pdfIn PDF document text
- http://files.momentsbyannephotography.com/uploads/1/3/1/0/131070459/9428582.pdfIn PDF document text
- http://files.unicomdesign.eu/uploads/1/3/1/1/131164236/b035f66b.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/1/0430/0318/3258/files/mosoterim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1243/7662/files/sabesetumimigusimutojib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3254/2369/files/29818181629.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1021/2519/files/22498113921.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0451/8638/4023/files/cartoon_drawing_techniques.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7609/1045/files/68290344868.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1656/8482/files/91317904351.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3382/0322/files/5174364132.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5042/5753/files/17375412055.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_off00007a37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A37 | 5844 bytes |
SHA-256: 3e9fb775e22d9ed6d3557c1898c28e9a44e22dcede8e33b6998505605ebd439e |
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font_01_sfnt_off00008e32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E32 | 10180 bytes |
SHA-256: 9c45a2906d57007363d3d1bcb4d475a26ff3ce027bd025d03d39af9576280252 |
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