MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Multiple heuristics point to the PDF acting as a link farm, directing users to various external URLs, some hosted on compromised CMS platforms. The presence of numerous unknown-reputation URLs suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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://medvor.ru/uplcv?utm_term=attack+on+titan+no+regrets+pdf PDF link annotation
- http://aptekadc.pl/userfiles/userfile/2448448073.pdfIn PDF document text
- https://tomas-music.com/contents/files/89391075334.pdfIn PDF document text
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/94a921889330f73676f05fd7bf8d54f8/dedebilirof.pdfIn PDF document text
- https://abcoegypt.com/userfiles/files/62279143044.pdfIn PDF document text
- http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/e0efe1bc1dc50d97cc13efef08da1f4d/pobojakowotelunigak.pdfIn PDF document text
- http://protetyka-lublin.com/images/wyswig_images/file/6068011021.pdfIn PDF document text
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135114ae2618---90281968518.pdfIn PDF document text
- http://muaah.ca/userfiles/files/vutemelozeximix.pdfIn PDF document text
- http://jl-vacuum.com/upload/files/wuzobuj.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b345a41706---walefivumebivemed.pdfIn PDF document text
- http://lltsg.com/uploadfile/file///2021092019315020.pdfIn PDF document text
- https://santa.my/images/users/00000000/files/gigivur.pdfIn PDF document text
- http://weiddy.com/uploads/files/202109180047587499.pdfIn PDF document text
- http://www.dilipprabhavalkar.com/images/file/79672454885.pdfIn PDF document text
- http://nktrading.qa/file/files/51301738733.pdfIn PDF document text
- https://yuktogel.com/contents/files/58794682363.pdfIn PDF document text
- http://koutingchina.com/upload/files/rugojavilipikuribizewis.pdfIn PDF document text
- http://billsky.ee/files/file/37715579935.pdfIn PDF document text
- http://erpsamik.com/ckfinder/userfiles/files/tefimosiw.pdfIn PDF document text
- http://hillsdalehorseboarding.com/ckfinder/userfiles/files/lakevupek.pdfIn PDF document text
- http://nenayu.com/filespath/files/20210918191752.pdfIn PDF document text
- http://knupress.com/pds/editor/file/zulibijabezudawoturon.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ded5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDED5 | 19160 bytes |
SHA-256: 51a346c6c1e5571f8328e69b17d9c253627730d62d344021d75e5db698359050 |
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font_01_sfnt_off0001103b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1103B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012852.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12852 | 10820 bytes |
SHA-256: ada408225b7c89514e3f3c90a0fbd28751deee32f5d143a9d56f4542a4d65212 |
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