MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=aqa+a+level+biology+specification+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting PDF files. The document body, though heavily obfuscated, contains text related to 'Aqa a level biology specification pdf' and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.
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=aqa+a+level+biology+specification+pdf In PDF document text
- http://files.vielka.com/uploads/1/3/0/7/130776111/3445326.pdfIn PDF document text
- http://gizuk.globalvillagetravels.com/uploads/1/3/0/7/130775677/636564.pdfIn PDF document text
- http://files.austinteenhotspot.com/uploads/1/3/1/0/131070212/nafigizumen.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0431/5591/4918/files/business_name_registration_form_kenya.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7301/0850/files/zomagipizipasakofoso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9236/1887/files/12221233920.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8922/2037/files/zetidamatijixefif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0536/9758/files/82473039466.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4977/0408/files/29233575338.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1972/2152/files/guwatotebazarinarori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4065/2960/files/types_of_brainstorming_methods.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8620/8406/files/autocad_3d_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7316/6744/files/lawilevujuvularijoruxen.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5110/5947/files/nesikig.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_off000064d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64D9 | 5432 bytes |
SHA-256: 12d00b78cb6cc7a386c221e78e0341122bc4bf5863bc15d8326aa91fe41826f3 |
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font_01_sfnt_off00007765.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7765 | 10404 bytes |
SHA-256: c69640524cc209d70c28d5a68be8dfdb094bc0d5549a1c1c438a6962e77d91d8 |
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font_02_sfnt_off00009af5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9AF5 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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