MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract users searching for specific book downloads. This suggests a phishing or malware distribution attempt, likely using the embedded links to redirect users to malicious sites or download further payloads.
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=automobile+engineering+full+book+pdf+download In PDF document text
- http://files.emilygillcrist.com/uploads/1/3/1/4/131406258/nukebukekizotiruk.pdfIn PDF document text
- http://files.byyoursidecounselling.co.uk/uploads/1/3/2/8/132816091/3361020.pdfIn PDF document text
- http://dedaja.joinpmcc.org/uploads/1/3/1/4/131407469/7418625.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/1/0440/6630/8246/files/fukavuri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7602/4475/files/91173286410.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0446/9909/1098/files/linux_mint_best_reader.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6777/6919/files/karazobozeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0069/8792/files/envision_math_4th_grade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8658/5749/files/wuxalikepunopewibiwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1782/8512/files/44098731351.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5193/2065/files/college_algebra_word_problems.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2937/2832/files/lijeguvanarep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0098/7811/files/3334490823.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7219/2669/files/straightforward_beginner_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4777/8469/files/wholly_sanctified_a_b_simpson.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_off000075d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75D0 | 5468 bytes |
SHA-256: c4d388a4a7a51fc574436c2ce8e631aa3591f59572593fdb7c94ad5c0cac8e85 |
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font_01_sfnt_off0000885d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x885D | 2116 bytes |
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30 |
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font_02_sfnt_off00009229.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9229 | 15552 bytes |
SHA-256: 778ba4d721ba4d181ac53a00ef2c0679be6fa5e49d96893b1464b262a61e9214 |
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