MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file is identified as malicious by ClamAV, specifically as Pdf.Phishing.Trojan. Static analysis revealed numerous URLs embedded within the PDF, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content. The document body, though truncated and obfuscated, contains text related to 'science paper notes', indicating a lure to disguise the malicious intent. No scripts were extracted, but the extensive use of external links points towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier suspicious score 0.4813
Heuristics 5
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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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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://smidgel.ru/uplcv?utm_term=ctet+science+paper+2+notes PDF link annotation
- http://nature-revive.org/files/file/77507132631.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c02248f32a4---24743268678.pdfIn PDF document text
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a263b55e3af---maxawowigorovuwabozapa.pdfIn PDF document text
- http://abpaluso.com/upload/file/28251668731.pdfIn PDF document text
- http://aquamedia.cn/ckfinder/userfiles/files/74429692675.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c599a81e600---60870691420.pdfIn PDF document text
- https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b02e83498e9---kikolopusikagazagazed.pdfIn PDF document text
- http://hncastlecable.com/d/files/xezuraxugazoropidiladu.pdfIn PDF document text
- https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e23be8d60---bodedasuwar.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7f4e27224---11597194337.pdfIn PDF document text
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840742f12a7---88186857742.pdfIn PDF document text
- http://creativeindustries.ru/uploads/userfiles/file/ranevabawanene.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088dcdabec0c---rizezuwososa.pdfIn PDF document text
- https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160836d632a700---raxejevemosujuwavativalul.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00012f7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F7D | 4840 bytes |
SHA-256: cce1d0d99f165b1daadd384cd5dbdfe40baf7d25f33eef5999576d0ce2e29a31 |
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font_01_sfnt_off00013feb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FEB | 3720 bytes |
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281 |
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font_02_sfnt_off00014b4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B4E | 9924 bytes |
SHA-256: 8f993569ff91ac9b6b83a0555b2396c76012e6443ea586760a9818e6362be6f4 |
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font_03_sfnt_off00016d43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16D43 | 16092 bytes |
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67 |
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font_04_sfnt_off0001820a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1820A | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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