MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body is obfuscated but contains the visible lure text '1st law of thermodynamics worksheet pdf' and the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are to benign Shopify domains, suggesting an attempt to blend in or distribute content widely. The ML_NYX_PDF_MALICIOUS classifier strongly indicates malicious intent.
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=1st+law+of+thermodynamics+worksheet+pdf In PDF document text
- http://files.samsaraholidayhouse.com/uploads/1/3/2/6/132681901/givijuwowekiga_xatozalizo_senubolubo_sijiniwefikav.pdfIn PDF document text
- http://files.xmmphoto.com/uploads/1/3/1/3/131383889/ruwonajelebujeresax.pdfIn PDF document text
- http://jatin.jrobsessions.com/uploads/1/3/1/3/131381204/7226282.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In 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/volobufepafolosovi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9315/6259/files/zikawolezizufutofodasali.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6240/2967/files/wixefakenufifa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4100/4443/files/49056287320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9795/6258/files/89505814578.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2797/1741/files/40918203959.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9164/8929/files/2151869889.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2198/4166/files/63085440531.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3248/5799/files/46504974326.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1485/6610/files/literary_criticism_an_introduction_to_theory_and_practice_bressler.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6630/8246/files/xabofu.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_off00004dcf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4DCF | 2460 bytes |
SHA-256: 90cbffdb1405eea01d9b1ec7309a58f7ca94532e3fa3907236ba1e1e4da39447 |
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font_01_sfnt_off000058d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58D9 | 5608 bytes |
SHA-256: 5c67c241928233813863a9f3c99e5cde7276d706704677c7a502e47dd1a19291 |
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font_02_sfnt_off00006bdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BDF | 9764 bytes |
SHA-256: 57e2b462645f876bdcd45221911189b1a72ce3ace3ba82c858b39d7f10100fae |
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font_03_sfnt_off00008d7b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D7B | 16180 bytes |
SHA-256: 8ef30eb595737c9edaf2600d9211bf461bc80de8fe90d2dd46013eb69bf7a81f |
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