MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a link farm or SEO manipulation tactic to disguise the malicious intent. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing lure for free downloads.
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=calculus+early+transcendental+functions+larson+6th+edition+pdf In PDF document text
- http://files.romainewashington.com/uploads/1/3/1/8/131857193/ropodefi.pdfIn PDF document text
- http://files.maryjoyceart.com/uploads/1/3/1/3/131379567/sojow.pdfIn PDF document text
- http://files.amandacasale.com/uploads/1/3/1/8/131871740/8872462.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0432/4281/5643/files/86184412205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3764/6245/files/bilatagotu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3208/3612/files/gta_san_andreas_hot_coffe_mod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6413/0710/files/ignou_bcom_syllabus_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8014/6343/files/vikunifovapopibijo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6350/8121/files/97637545471.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8403/7792/files/copy_certification_by_document_custodian.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7252/0352/files/entrepreneurship_development_programme.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8511/1203/files/7223913054.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2603/9463/files/49688263658.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0047/0438/files/problem_solving_and_decision_making_skills.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6653/0719/files/pujepa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2920/8992/files/bibazoparelusaxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6300/0734/files/46708541798.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_off0000af4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF4C | 5404 bytes |
SHA-256: 0c0fc3b0864f490968a1dfe6a0fbea98f31df26fd910dc552ba7258d7cafaca3 |
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font_01_sfnt_off0000c1ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1AE | 14996 bytes |
SHA-256: c008eb90aaf822cdeecfc16462b47c25a6191e4443d5393a7ad09e432f76e215 |
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font_02_sfnt_off0000f0b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0B9 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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