MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by a machine learning classifier and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting, often with UTM parameters suggesting a lure for downloading software like WhatsApp. The presence of multiple external URIs and a link farm structure indicates an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://allytemp.ru/uplcv?utm_term=whatsapp+apk+file+free+download+for+pc+windows+7
- http://writtenmail.com/upload_images/file/30501873329.pdf
- http://af.ssla.ru/images/fornews/files/konodigibu.pdf
- http://euro520.net/userfiles/file/16317885111371652299.pdf
- http://toonesk.com/upload/7960220052.pdf
- https://tannhatviet.vn/upload/files/vikabezoboxedebisu.pdf
- http://sinosteelcode.com/filespath/files/20210906173822.pdf
- http://vlajamo.cz/images/file/damumuduribazarigezig.pdf
- http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/16146f433cb7ed---28355778349.pdf
- http://fukaofoods.tw/uploads/files/202109171403382559.pdf
- https://dynasty888.com/image/files/20210919_002916.pdf
- http://debten.net/UserFiles/File/dunifalivuda.pdf
- http://aedelsur.com/contenido/files/56900088273.pdf
- https://wupaojichangjia.com/d/files/67307027654.pdf
- https://www.antoniopopolizio.it/ckfinder/userfiles/files/61937484920.pdf
- http://conganbacgiang.vn/app/webroot/uploads/files/bubenafakumumuvepegajar.pdf
- http://asavn.vn/uploads/userfiles/files/29532397468.pdf
- http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/22583538262.pdf
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16142b827691e3---79599860555.pdf
- http://otworz-biuro-podrozy.pl/userfiles/file/48371023055.pdf
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161467d7992250---wonabadadewizamovo.pdf
- http://kahasat.cz/data/file/wuposepefelokatogakekod.pdf
- http://neoclassicalmansions.com/uplds/file/gegufodudikusubojebix.pdf
- http://atletika-pardubice.cz/files/file/10554646101.pdf
- https://wisestudentz.com/userfiles/file/movidowavi.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_off0000d8f3.bina5d2b6199ae67aa03bddb998de1922cde2fe623164070c6ce8a5790d1c48bd96 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8F3 | 18468 bytes |
font_01_sfnt_off0001091d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1091D | 16792 bytes |
font_02_sfnt_off00012134.bin255b81d301b3f2f25604167d40a11566bfff1a5e6d0a1b672313f5303271a4b6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12134 | 10940 bytes |
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