MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating malicious redirector links and a link farm, designed to lead users to potentially harmful content. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs, such as 'https://yafferge.ru/123?utm_term=enneagram+personality+types+compatibility', are indicative of phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://yafferge.ru/123?utm_term=enneagram+personality+types+compatibility In PDF document text
- https://cdn.sqhk.co/wisulekekij/2gguJgc/pobofuvegofegipagetedawo.pdfIn PDF document text
- https://zadukali.weebly.com/uploads/1/3/5/3/135340438/2172386.pdfIn PDF document text
- https://cdn.sqhk.co/bopelara/kieVjc3/vosipetulijar.pdfIn PDF document text
- https://cdn.sqhk.co/kiribikiv/aDkb4Ls/gmod_mods_download_no_steam.pdfIn PDF document text
- https://cdn.sqhk.co/kidatufo/icDgiig/16596488233.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/xefejevife/fender_stratocaster_buying_guide.pdfIn PDF document text
- http://waxusumuguk.epizy.com/wibezafifivowopewil.pdfIn PDF document text
- https://s3.amazonaws.com/mejifavo/karotugopurig.pdfIn PDF document text
- http://godavuvexo.epizy.com/sonocent_audio_notetaker_free.pdfIn PDF document text
- http://divifafapinuk.rf.gd/79665821354.pdfIn PDF document text
- http://rawuzogese.rf.gd/creative_writing_character_creation_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/mafavuzenoliki/putivokubo.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e97f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE97F | 6744 bytes |
SHA-256: 8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4 |
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font_01_sfnt_off0000fa35.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA35 | 5284 bytes |
SHA-256: b6d0bb4fca4c70f2fa9ef10627e2fa828209bfa4f83df628c021cef6c63135fa |
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font_02_sfnt_off00010c57.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C57 | 5452 bytes |
SHA-256: c981cda2afc15bd205126bc40eceae1dd3d86253f2a9d4bdd86ef2bb8da479d2 |
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font_03_sfnt_off00011ed6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ED6 | 11056 bytes |
SHA-256: e0a79d56aad10fbb5d02ead09bf3552a59c6dfd02c071fe97439df59731d836a |
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font_04_sfnt_off0001446f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1446F | 16092 bytes |
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140 |
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