MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a link to a known malicious redirector, `https://ttraff.cc/pify?keyword=a+level+biology+questions+and+answers+pdf`, which is likely used to obscure the final malicious destination. The document body text, though heavily corrupted, contains fragments suggesting it is a lure for 'a level biology questions and answers pdf'. The primary attack pattern involves tricking the user into clicking the malicious link under the guise of educational content.
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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Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.cc/pify?keyword=a+level+biology+questions+and+answers+pdf.
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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.cc/pify?keyword=a+level+biology+questions+and+answers+pdf In PDF document text
- http://files.boxedph.shop/uploads/1/3/2/7/132712088/goxipavopemilifixo.pdfIn PDF document text
- http://files.4hcampohio.org/uploads/1/3/1/0/131070151/libajivipudere.pdfIn PDF document text
- http://files.ntyf.org/uploads/1/3/0/7/130775286/zuxan.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/99839510681.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3077/2901/files/8732387073.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1249/7313/files/90606712772.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2834/9085/files/bonitel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5072/9634/files/norewet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1708/4839/files/81853523773.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1613/4551/files/19685961987.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7641/9744/files/lagoditorapobivilizoze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3508/1374/files/dapozevapugozadoxawujepun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7231/3751/files/vaporugigeruzikiwidoxuki.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_off00004f37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4F37 | 5716 bytes |
SHA-256: 0e3f7b5599315ae9e38a81df27b009c7772e80eb43e2a36dbebc7763e8049a78 |
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font_01_sfnt_off000062d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62D2 | 10304 bytes |
SHA-256: 1b87cdfbfb0cb8dddf7199982957bd80764a4410de1425157ee21c00b3c3cb12 |
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