MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains embedded links that redirect to a known malicious URL, disguised as a worksheet. The ML classifier strongly indicates maliciousness, and the presence of numerous links to external PDFs suggests a link farm designed to drive traffic to malicious infrastructure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.
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/wb?keyword=cell%20organelle%20functions%20worksheet%20middle%20school In PDF document text
- http://files.pharosjot.com/uploads/1/3/1/4/131453610/roradovixem_vemexisegida_farewilesojawip_tarowev.pdfIn PDF document text
- http://files.warfuelkitchen.com/uploads/1/3/1/8/131857562/7116007.pdfIn PDF document text
- http://files.marinegibert.net/uploads/1/3/1/3/131380953/7630616.pdfIn PDF document text
- http://files.hlaa-or.com/uploads/1/3/1/3/131380894/5906340.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/1/0431/7567/4014/files/12211681624.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0576/2974/files/24733617218.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9842/3967/files/renesu.pdfIn PDF document text
- https://jurikebigox883042776.files.wordpress.com/2020/06/83459552900.pdfIn PDF document text
- https://xubutamim.files.wordpress.com/2020/06/44178111872.pdfIn PDF document text
- https://xulesik.files.wordpress.com/2020/06/litupovolumujopu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7307/7409/files/pibik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9508/9559/files/dewid.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5664/4774/files/mugufofaguposavokukiwi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0006/9285/files/23646074111.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6980/0597/files/mimeresanexalow.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_off0000707d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x707D | 5496 bytes |
SHA-256: 444d04afc2506e15043cdf70edc59988f7d5c22a7355e7a56f44624a60974dfa |
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font_01_sfnt_off00008313.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8313 | 10348 bytes |
SHA-256: ec819dfb0b248a01d2c5c70daca3365e5725d79d32280104f700a757bc9111e3 |
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