MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many of which are to external sites, and one specific link is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'electronics and communication engineering books pdf free' and the malicious redirector URL. This suggests a social engineering lure to trick users into clicking the link, which then leads to malicious infrastructure.
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/pify?keyword=electronics+and+communication+engineering+books+pdf+free In PDF document text
- http://files.liberalcoalition.com/uploads/1/3/1/3/131384113/dogirolamomegedavegi.pdfIn PDF document text
- http://files.technicalwritingonline.net/uploads/1/3/0/7/130739060/vokezanekapuzevut.pdfIn PDF document text
- http://files.culinaryvacationsinc.com/uploads/1/3/1/4/131437924/donuxowodunejuvito.pdfIn PDF document text
- http://files.rebeccaevans4gower.com/uploads/1/3/1/6/131636728/9387543.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/1/0447/2619/0234/files/cello_scales_and_arpeggios.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9240/1566/files/base64_to_javascript.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5203/9328/files/46070422853.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0603/3052/files/ielts_speaking_part_3_sample_questions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5352/2850/files/30198712957.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4586/3067/files/dexekizolos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5354/7677/files/guresosupifobe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0636/9703/files/expressive_and_receptive_language_disorder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9717/6741/files/employees_provident_fund_act_1952_bare_act.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8613/5961/files/comunismo_e_socialismo_em.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8251/3570/files/43181324335.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4537/1549/files/simokijawowulezab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2269/7126/files/jafelusopujudixokebaloxiv.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_off00005fb0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FB0 | 5636 bytes |
SHA-256: 9432cbd7920fda0780bd0e7690e7d7701c86b95a3f0fd30e0010804858c9d46a |
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font_01_sfnt_off000072bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72BF | 2116 bytes |
SHA-256: 89454d8ece1be00d2333aac76955f46ed17c4d141322e635bf27f42efb43e54e |
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font_02_sfnt_off00007c8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C8B | 14336 bytes |
SHA-256: fe83f4fef679dc55740a60c5dbc548d4ee2f49ea75f2a95646be237faa678247 |
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