MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass external link farm, with one primary link identified as a malicious redirector. The document body text, though partially corrupted, includes the text 'Quantitative aptitude questions answers pdf free download' and the malicious redirector URL, indicating a lure to download potentially harmful content. The presence of numerous links to PDF files hosted on various domains suggests a link farm designed to improve search engine ranking for malicious content or to distribute malware indirectly.
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=quantitative+aptitude+questions+answers+pdf+free+download In PDF document text
- http://files.artlynch4sag.com/uploads/1/3/2/3/132302896/dovobofizomotutexet.pdfIn PDF document text
- http://files.trueelegancetransportation.com/uploads/1/3/0/8/130814868/sepomogokelitu_sugevexabul_xakanak.pdfIn PDF document text
- http://files.iam4spiritmechanics.com/uploads/1/3/2/6/132681295/dd9a688d8ba1aa.pdfIn PDF document text
- http://files.raoulpacheco.com/uploads/1/3/1/4/131407921/9328959.pdfIn PDF document text
- http://files.jessiedallasdesigns.com/uploads/1/3/1/3/131381288/jekumelediw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9159/0308/files/accounting_and_finance_for_non_specialists_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4920/5405/files/nijageg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3428/0099/files/12669108836.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/4734/9406/files/mage_awakening_2nd_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7871/2472/files/37844778936.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3378/6525/files/lithium_lyrics_evanescence.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4327/4402/files/52926055228.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7284/0090/files/roman_catholic_lectionary_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81579197248.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000751d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x751D | 5376 bytes |
SHA-256: d7656681677a7434e911ca21b6da606299c316fbbc4a78b2a5da32797ecb4f23 |
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font_01_sfnt_off00008781.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8781 | 3720 bytes |
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b |
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font_02_sfnt_off000092e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x92E4 | 15940 bytes |
SHA-256: ad337ebfcc5ef3bd25062eae23e8da9a011df22a424e11e5cb6b4232f54e7427 |
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font_03_sfnt_off0000c44f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC44F | 9100 bytes |
SHA-256: 2a88d3fd642f860cfd1949b41d2305458e62c231bc09dbcd34f70c1381cc8147 |
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