MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link, which is a common technique for delivering malware or phishing pages. The document body and embedded links suggest a lure related to educational materials, specifically 'elementary biology class 11 pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm tactics used to obscure malicious destinations.
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.cc/pify?keyword=elementary+biology+class+11+pdf In PDF document text
- http://files.keysscape.com/uploads/1/3/1/4/131453136/vazoxuto.pdfIn PDF document text
- http://files.retirementtimeline.com/uploads/1/3/2/7/132740285/bakuzenazupoxa.pdfIn PDF document text
- http://rizas.samuidivesupply.com/uploads/1/3/0/9/130969723/8183268.pdfIn PDF document text
- http://joziwofi.myroncotton.com/uploads/1/3/1/0/131070993/3176883.pdfIn PDF document text
- http://files.libertycraftbrewing.com/uploads/1/3/1/1/131164210/witorumotoso.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/1/0429/9181/2767/files/wevopaxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4253/5581/files/gajanase.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8018/8058/files/suzuki_eiger_400_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7102/0957/files/pedarijasidalebonigada.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3545/0774/files/luwin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8163/7794/files/23126052356.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7180/7391/files/14328563441.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5656/1318/files/25071017434.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5900/9943/files/carbon_dating_examples.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6991/5814/files/1336634235.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5448/7969/files/how_to_draw_human_faces_step_by_step.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005acc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5ACC | 5724 bytes |
SHA-256: 9a8204b3a49c42f700262338ca32485c1f323aba73f321a0f45a9610f750a795 |
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font_01_sfnt_off00006e31.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E31 | 2340 bytes |
SHA-256: a39d09223a37b348cf89458d18d8e935856af5c4a65ff07a1213a534314bdf84 |
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font_02_sfnt_off000078e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78E4 | 15896 bytes |
SHA-256: 09d4aeba1a31f0e00db4612a04b0f68938434ac07a1d4eff498af6fae51648da |
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font_03_sfnt_off0000aa55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA55 | 16480 bytes |
SHA-256: aa271c9f2f3e85516b55a12ca92b26b3ee0fdcce37f7f3758cce62b90f278e4c |
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