MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of a 'Password-protected archive handoff' heuristic indicates a common tactic to bypass gateway security. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the download of a second-stage payload via the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 8
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://irlanc.ru/uplcv?utm_term=teenage+mutant+ninja+turtles+rooftop+run+apk+download
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614debc6e2aba---bokevifazofekedavilez.pdf
- http://1544-7419.net/upload/fckeditor/file/maxewo.pdf
- http://appextskihjthj.handylover.com/upload/files/redajemapiriw.pdf
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/kcuenr9rjnuk5s4u3o7hjjemsb/94591369015.pdf
- http://zdrowejaja.com/Upload/file/42592669273.pdf
- http://grotech.in/userfiles/file/45441219258.pdf
- https://5703n1n6999-6a55.com/contents/files/kabixonofigifovefavit.pdf
- http://szentimresiklos.hu/upload/file/2816331297.pdf
- http://clinical-pain.com/pds/userfiles/files/tozosiworewoxarodupuf.pdf
- https://equantumconsulting.com/files/files/61824648076.pdf
- http://thekreativecompany.com/uploaded_files/userfiles/files/44521438727.pdf
- http://fzsvybbs.at/userfiles/file/misedelujewomidefak.pdf
- https://ku4ysk-9lgp4y.com/contents/files/33117999507.pdf
- http://faceconnects.com/ci/userfiles/files/pumuvi.pdf
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161314aa6c9b7d---85237657093.pdf
- http://onyx-innovations.com/assets/ckfinder/userfiles/files/34608495337.pdf
- https://giga-tronics.com/userfiles/files/rarigavaraworutev.pdf
- http://af.ssla.ru/images/fornews/files/sububizixutoxiwax.pdf
- http://kursadowicz.pl/Upload/file/naxasibefuniluke.pdf
- http://automozg.by/upload/editor/files/magovoguzalagitevozob.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000acb5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xACB5 | 16792 bytes |
font_01_sfnt_off0000c4cc.bin58cccd49f77cbb987091d3277cd2e5058353204efd2d1bc2736ad832c4348c8f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4CC | 11212 bytes |
font_02_sfnt_off0000ded4.binbd96801716608de397a44789d0e77ff6fbbb249a9d8435d08479ec4beeb265d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDED4 | 17276 bytes |
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