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 are part of an SEO link farm, suggesting a deceptive purpose. The presence of a redirector URL like 'https://leonvi.ru/strik?utm_term=english+grammar+tenses+book+in+urdu+free+download' indicates an attempt to direct users to malicious content. ML and ClamAV heuristics confirm the malicious nature of the PDF, classifying it as phishing or a trojan.
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=english+grammar+tenses+book+in+urdu+free+download PDF link annotation
- https://cdn.sqhk.co/mikedeto/hchhjaI/president_ramaphosa_latest_speech_on_covid_19.pdfIn PDF document text
- https://cdn.sqhk.co/bexuxoxabim/cgf4ije/drive_in_movie_theater_nyc_halloween.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4474223/normal_60152c0d0f74d.pdfIn PDF document text
- https://cdn.sqhk.co/sujutowupolu/qCwhdjf/cooking_fever_triple_gems_casino.pdfIn PDF document text
- https://wowiwega.weebly.com/uploads/1/3/1/4/131453904/e64d793f57829f.pdfIn PDF document text
- https://nimafomu.weebly.com/uploads/1/3/2/7/132710507/vagevuse-nizasediwovodi-kobif.pdfIn PDF document text
- https://cdn.sqhk.co/naludibeg/gjf6zic/tips_main_hungry_shark_evolution.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415531/normal_605a584d9b965.pdfIn PDF document text
- https://boxagabopevonud.weebly.com/uploads/1/3/4/3/134353696/zimoxubu.pdfIn PDF document text
- http://degejebinet.iblogger.org/8469172735.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4454438/normal_5fffefefa73ed.pdfIn PDF document text
- https://vajojesorenum.weebly.com/uploads/1/3/0/9/130969616/babitikegego.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419644/normal_5ff9c17da0087.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://rewezaxow.epizy.com/94967498001.pdfIn PDF document text
- https://s3.amazonaws.com/vidadaviwal/bbc_4_tv_guide_listings.pdfIn PDF document text
- https://s3.amazonaws.com/tonemakopinibem/directv_filipino_channels_guide.pdfIn PDF document text
- https://s3.amazonaws.com/setigafat/free_translator_app_for_pc.pdfIn PDF document text
- https://s3.amazonaws.com/rodiligarexo/david_ramsey_baby_steps_book.pdfIn PDF document text
- https://s3.amazonaws.com/faxaxos/how_to_solve_a_2x2_rubiks_cube_step_by_step.pdfIn PDF document text
- http://jajoditad.rf.gd/kojawotavubed.pdfIn PDF document text
- https://s3.amazonaws.com/bolovopizonuki/12419181745.pdfIn PDF document text
- https://s3.amazonaws.com/wopari/bekadron_se_karke_pyar_mp4_song.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_off0000fd22.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD22 | 5576 bytes |
SHA-256: 5f7f283b9e949f1d8f062924ec1b43c960e76c9366b3565a535683b9acd90137 |
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font_01_sfnt_off00011001.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11001 | 10780 bytes |
SHA-256: a151fe333d57f54018f34ab61a7956423bc30e84c08621600557aef70c366ec6 |
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