MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF document contains a lure related to a 'South African history quiz' which directs the user to a malicious redirector URL. This redirector is likely part of a chain designed to deliver malware or facilitate credential theft. The presence of numerous links to PDFs hosted on various domains, including shopify, suggests a link farm or distribution network. The heuristic 'SE_BROWSER_INSTALL_LURE' further indicates a social engineering attempt to trick the user into installing unwanted software.
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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.com/pify?keyword=south+african+history+quiz+questions+and+answers In PDF document text
- http://befukola.iamcnola.org/uploads/1/3/0/8/130874276/2897580.pdfIn PDF document text
- http://files.cherylgrayfineart.com/uploads/1/3/2/3/132303077/ditujufexuripazewe.pdfIn PDF document text
- http://files.nigellasativacenter.com/uploads/1/3/2/6/132683088/02db50.pdfIn PDF document text
- http://files.erinreviewswine.com/uploads/1/3/1/4/131452778/2877599.pdfIn PDF document text
- http://files.mytoyaussie.com/uploads/1/3/2/7/132741144/e577fb.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/1/0435/7344/4767/files/38504183361.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8746/9469/files/zeguvibamosepo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3831/8487/files/tegujokukexevabewuzot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8317/7885/files/fiporunogezusuje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2691/5239/files/gifiwabopedufomevumolipi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9243/5359/files/35547901366.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5851/1510/files/mufavekagejexanoker.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0979/2407/files/jekufekojuwi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0805/7759/files/kelabovefiduj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9900/4831/files/microelectronic_circuits_7th_edition_download.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_off000058a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58A2 | 5548 bytes |
SHA-256: 14c45ac5eda4a6b6508c45f0a9f87e9a2bf8d2dade5c05f886fbf2ee27af6223 |
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font_01_sfnt_off00006b8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B8B | 2392 bytes |
SHA-256: f8d4148b6e46bc91798ffeec3a70ef9314c351a1087124f002ffbf348bbdba4a |
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font_02_sfnt_off00007507.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7507 | 10296 bytes |
SHA-256: 5f9cd9f9addd35bcf47a50a2854d88e6e12e5b6abb52e12b001c4f375e2829d2 |
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