MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting educational content ('Teacher's guide math 9 unit 4') which is likely a lure. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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=teacher%2527+s+guide+math+9+unit+4 In PDF document text
- http://files.canapax.net/uploads/1/3/1/4/131452741/086c13cfa40f7cc.pdfIn PDF document text
- http://files.elpasoalfalfa.org/uploads/1/3/2/7/132741064/97929961aa5.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/1/0432/3858/8584/files/amcat_aptitude_test_papers_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8837/9032/files/deresubitujuvarodijoka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9860/3669/files/modoo_marbel_online.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2218/6653/files/70069831764.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3292/6615/files/2020_telugu_festival_calendar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4020/9056/files/29447526830.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0454/7867/4584/files/dokuvovitigevuvevi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5960/9753/files/windows_7_activation_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1081/7180/files/physiology_in_nutshell_ak_jain.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4302/7104/files/3482056854.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9387/7145/files/gutuwisasasok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/9572/5982/files/16800373442.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7701/8524/files/92723111902.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1120/1435/files/antrenmanla_geometri_2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8803/5486/files/zapudiwum.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_off0001ac14.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1AC14 | 1580 bytes |
SHA-256: caaba34bda0f0a2eee83ab5d104f37efa5161df520475258d32264f4216373a0 |
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font_01_sfnt_off0001b3ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B3EA | 5548 bytes |
SHA-256: ec6f2e646bd676a2bdd4bcd876b462d125bba2be09e563c8fe33164ec9752568 |
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font_02_sfnt_off0001c6ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C6AE | 15952 bytes |
SHA-256: 49b189e5ff9e7d8f041bcad7abbf02894f4350b1faa9e7722d9de5312964b723 |
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font_03_sfnt_off0001f87e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F87E | 16796 bytes |
SHA-256: c1cdfb40f4ff0fd38d93afdf798e838630aea926ff5bdfce4d70ad8840aabf0b |
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