MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous external links, many of which point to SEO-optimized PDF files, suggesting a link farm or phishing lure. The primary malicious URL, 'https://leonvi.ru/strik?utm_term=noun+phrases+worksheets+for+grade+3', is identified as an SEO redirector for phishing. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', reinforcing the phishing and malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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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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External URI info PDF_URIPDF contains an external URL action
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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://leonvi.ru/strik?utm_term=noun+phrases+worksheets+for+grade+3 PDF link annotation
- https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/kesuzovigonem.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379489/normal_605c99da59bf4.pdfIn PDF document text
- https://jatekowi.weebly.com/uploads/1/3/0/7/130776123/gowike_toliwuxeruv_kovaxujezibuma_joven.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369654/normal_5fd3215279c2d.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/baposivarabuj/avast_mobile_security_premium_apk_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74b430eb-a13e-40bc-b823-4b301b20a67e/lg_front_load_washing_machine_will_not_drain.pdfIn PDF document text
- https://s3.amazonaws.com/wulagisi/nafilipegevudif.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6531705e-2e2b-42d8-a29f-7a6a0d8a75bb/25580757564.pdfIn PDF document text
- https://s3.amazonaws.com/mujesogi/subject_verb_agreement_exercise_4_answer_key.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3dc0f33e-211c-4dfe-87ff-353647519b4d/pirizovota.pdfIn PDF document text
- https://s3.amazonaws.com/falevi/work_review_answers.pdfIn PDF document text
- https://s3.amazonaws.com/dazutun/71387424328.pdfIn PDF document text
- https://s3.amazonaws.com/padanivozeb/forgotten_fire_adam_bagdasarian.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/93cdfe76-b004-46f0-acb8-30b861acc8c9/33829389813.pdfIn PDF document text
- https://s3.amazonaws.com/gulapore/30591977224.pdfIn PDF document text
- https://s3.amazonaws.com/widuxade/49562523239.pdfIn PDF document text
- https://s3.amazonaws.com/saziwijaxodav/ge_spectra_oven_manual_calibration.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/756f4a1c-b386-4f4f-8dfc-813b3850529b/linux_system_programming_oreilly_download.pdfIn PDF document text
- https://s3.amazonaws.com/pojikovewijeja/kudubatewimuxusuve.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b891e917-c016-4ef5-ac85-76393b3938c9/what_do_black_ants_mean_in_a_dream.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dc2c8982-73e4-43c4-a5ef-fbe45c20a804/5614874059.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ea32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA32 | 5560 bytes |
SHA-256: c3cd5f5d6a1b70f4dfc82219f3143162b60f548c8ce25ca72e6e1697ed1d1155 |
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font_01_sfnt_off0000fd30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD30 | 11260 bytes |
SHA-256: db77ea3fd3631dedae77177ab0615f9300081396b60121663104852efc8c1da2 |
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