MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised or disposable domains, suggesting a link farm or redirection mechanism. The presence of embedded URLs and the 'SE_DOWNLOAD_BUTTON' heuristic indicate a lure to download or visit malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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 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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://mklaassen.nl/images/file/molusozune.pdf
- http://snnet.kr/board_pds/fckeditor/2021/09/file/78263997096.pdf
- http://lishasurgical.in/ckeditor/ckfinder/userfiles/files/diburoririnulumugama.pdf
- https://maggies-handmade.com/UserFiles/files/xetovobumizavineruk.pdf
- http://35ju.21tg.cn/uploadfile/ckeditor/files/kakizozukutipibira.pdf
- https://rugsdirect4u.com/uploadedfiles/file/45278331593.pdf
- http://mofrantech.com/userfiles/file/fadep.pdf
- http://thomas-zigon.de/images/file/jezavonuwurexojav.pdf
- http://marcus-1.com/FileData/ckfinder/files/20210903_2222F1C7D99E0202.pdf
- http://waxiangyuan.com/upload_fck/file/2021-9-20/20210920010926959631.pdf
- http://tcihk.com/userfiles/99186426235.pdf
- https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/91338207026.pdf
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615574a403b72---vuburedufoxukutedabudasu.pdf
- https://birutelorasin.com/contents/files/52024372871.pdf
- http://webbolt.fono.hu/data/editorfile/wanaworekun.pdf
- http://xn--80aiddhbkcq5bcaz.xn--p1ai/upload/files/zilodenekizedazuwa.pdf
- http://www.sport-konyv.hu/userfiles/file/lugisid.pdf
- https://miet.hu/kepek/didibutidoxewoke.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/dnbblk12nhabdusiulhfqcb481/bufuf.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153ef6a0dc38---sovivoratimesizuvol.pdf
- https://kapokcmassage.com/uploads/files/202109040630292292.pdf
- https://un7un9b3rl1pa7-99.com/contents/files/benabemezeximilomagazido.pdf
- https://mimzyonline.com/userfiles/file/2084766269.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=too+much+saliva+in+mouth+at+night
- 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_off0000cdc4.binfd58da05f92b1f9479205e02e0e4b84ec67496ec45036fde5bbc870119a48585 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDC4 | 16916 bytes |
font_01_sfnt_off0000f8fd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8FD | 16792 bytes |
font_02_sfnt_off00011114.bin2fd1dc9694851a7e9bbee39170ee979a29584e1991c4d138558d422362298544 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11114 | 10576 bytes |
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