MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a large number of embedded links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The presence of numerous external URIs and the PDF_RANDOM_URL_LINK heuristic indicate a strong intent to redirect the user to external, potentially harmful, resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 http://mitchelllawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/71110427352.pdf
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160da54b8534bb---fukosasope.pdf
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856145e70a6---61084167663.pdf
- http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/7433468707.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/jseruvf33ng2idfp49duebsnt7/37233058401.pdf
- https://abicecream.ru/ckfinder/userfiles/files/fivepativilaronuda.pdf
- http://airmon.hu/images/files/37919738443.pdf
- http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e890d857b4---25161732526.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c33e2acec31---46461493856.pdf
- http://badaranquehablar.com/userfiles/files/zoxulukatavuwe.pdf
- https://adepotcustom.com/UploadFiles/file/20210428035447168.pdf
- https://taybaite.com/userfiles/file/zugemawotegegewo.pdf
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/hv9kutjcufn74tt1a5muqaugj3/guwowi.pdf
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/6a9s739l6omdph9tm2kdqk5lt3/90662363542.pdf
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160966970127e7---mufifemevoj.pdf
- http://grandinhr.eu/images/user/file/86945869880.pdf
- https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/31feda38257b3c7258b0a73c0c5e0acb/pibamaxuranuri.pdf
- https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/d7d103b360bac37ca77e0d4232566b7f/49073609254.pdf
- http://alexhofford.com/temp/files/file/38858513837.pdf
- https://mbamantra.com/ci/userfiles/files/xukebojo.pdf
- http://akinmedikal.com/uploads/file/1907434400.pdf
- http://ccswcd.com/userfiles/file/sagufaxofiniporonumu.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=simple+salmon+croquettes
- 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_off0000e5c3.bind831b00c19d80ca9f93fa43a44c9f59e88daf448b15875d33fd48082844cc7f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5C3 | 17172 bytes |
font_01_sfnt_off000112ac.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112AC | 16792 bytes |
font_02_sfnt_off00012ac3.bin3a199316880c776394c00dc0f381bf6d78031a1ed246ee9db5823931004e3e26 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AC3 | 10856 bytes |
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