MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 76 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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://www.wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/rudagoperojafovijifufo.pdf In PDF document text
- http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16092d191953c6---sovubode.pdfIn PDF document text
- http://atomleasing.ru/media/File/gekikekemebapofekixa.pdfIn PDF document text
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/51acf720d87d8e64bb9ee9f594552b19/rusatuf.pdfIn PDF document text
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160832edf29dc9---37756253006.pdfIn PDF document text
- http://nguyenquangcomputer.com/upload/ck/files/1387495431.pdfIn PDF document text
- https://keralahappyjourney.com/ckfinder/userfiles/files/25146820223.pdfIn PDF document text
- http://tanriovermensucat.com/uploads/genel/files/gafuxivudazabudowosodipi.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c798d59ddb---turupenaxilikovofa.pdfIn PDF document text
- http://brno-skoleniridicu.cz/ckfinder/userfiles/files/lamiximawuzajodizosudej.pdfIn PDF document text
- http://nicenpos.com/userData/board/file/toxoduwa.pdfIn PDF document text
- https://biothiennam.com/media/ftp/file/62706221465.pdfIn PDF document text
- https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/b7908f01e8631ea1042cfce746ce4000/19602947255.pdfIn PDF document text
- http://abacusnancy.com/userfiles/file/zezuzuguluwo.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ee382dca9---nalodebekiva.pdfIn PDF document text
- http://carrozzeriabosini.net/userfiles/files/niropinepadimugeduki.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160983fed6462c---xipuvajolam.pdfIn PDF document text
- https://indikino.com/ckfinder/userfiles/files/zukilepokinojafosu.pdfIn PDF document text
- https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160faa75cdf6c6---78039681485.pdfIn PDF document text
- http://bularz-auto.pl/images/userfiles/file/37973435663.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c24666c3ee8---malome.pdfIn PDF document text
- https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/b70218c43d9a831fc78c0f31028257ff/98810412855.pdfIn PDF document text
- https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc83b64ded---29884041797.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c0399449f5f---valowavidolokafa.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=history+objective+questions+and+answersPDF link annotation
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b831.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB831 | 16448 bytes |
SHA-256: 0e4cde3d5bdd5452960de995a4807c8da4ec665155a9812e2f8e54e6c49b7878 |
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font_01_sfnt_off0000cf0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF0B | 11092 bytes |
SHA-256: 24d28d90c3f27f65dd364ab739b20d024242a402095e6aa6581ee855b93a0942 |
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font_02_sfnt_off0000e8e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8E5 | 13600 bytes |
SHA-256: 8e53cc30960c1fc8ff1b17eeccf01171738902e9e84b228d36d826f764e4da13 |
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font_03_sfnt_off00010a3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A3A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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