PDF malware analysis — malicious · 69e45d841fa62ff5

MALICIOUS

PDF

81.0 KB Created: 2021-09-18 05:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: e9fa636e4bb9dc264d95f2ffea287da9 SHA-1: 8f4d02fecc6399106f3192c5835c3f305ed3d87a SHA-256: 69e45d841fa62ff50d67ce94b5effc4426e71c15e8f55376eed00b1cc9bf197d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of embedded URLs, many of which point to disposable hosting and are likely used for phishing or to download further malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate attempt to create a link farm for SEO manipulation or to distribute malicious files.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://drafthe.ru/uplcv?utm_term=windows+program+on+android PDF link annotation
- http://hiroi-es.info/yamituki-n/uploads/files/10983672879.pdfIn PDF document text
- http://solarhomepage.ch/fckeditor/editor/images/file/lokokufuwenol.pdfIn PDF document text
- http://mashhadgardi724.ir/basefile/mashhadgardi724/files/futadaza.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d26d28e98---53905285696.pdfIn PDF document text
- http://seasonsblinds.com/uploads/ckfinder/userfiles/files/31356671622.pdfIn PDF document text
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/c84f0b5f95fff27b62e26e2402cf8015/89123677881.pdfIn PDF document text
- http://lindendirect.com/ckfinder/userfiles/files/87464883776.pdfIn PDF document text
- https://nitdgp.ac.in/uploads/userfiles/files/98518182916.pdfIn PDF document text
- https://ctyhoanongangiang.com/userfiles/file/7992569881.pdfIn PDF document text
- https://hotararicedo.ro/files/files/zenubogiranenodalufemem.pdfIn PDF document text
- http://jagatjyotischool.org/jagatjyotischool/userfiles/file/bupezolibavapurerelamesa.pdfIn PDF document text
- http://a-xian-coat.com/uploads/files/202109010307156087.pdfIn PDF document text
- http://mesterteto.hu/userfiles/file/nomajowezinulojivefe.pdfIn PDF document text
- http://strandedtattoo.com/file/22488364451.pdfIn PDF document text
- http://kernenshepler.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pumiwazotunemuv.pdfIn PDF document text
- http://www.slappedtogether.com/editoruploadfiles/file/zigomexejix.pdfIn PDF document text
- https://www.q-jin.ne.jp/ckfinder/userfiles/files/52923774729.pdfIn PDF document text
- https://aiwatopup.com/ckfinder/userfiles/files/foxexawebar.pdfIn PDF document text
- http://lnv-cnc.com/userfiles/file/62214000951.pdfIn PDF document text
- https://soportedevida.mx/ckfinder/userfiles/files/nuteruvesopabutisero.pdfIn PDF document text
- http://mtcongnghiepxanh.com/upload/fckimagesfile/65836299139.pdfIn PDF document text
- http://philipsphotographystudio.com/87367559324.pdfIn PDF document text
- https://stef-nancy.fr/upload/document/wazabinimawovofoweligof.pdfIn PDF document text
- https://calson.garment-pro.com/ckfinder/userfiles/files/39224055624.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_off0000d8a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8A5	10540 bytes
SHA-256: `8c256af107ffe2a7f438cf4b7c18fab83c6daa0dfb944b9894e7327a4a336293`
`font_01_sfnt_off0000f06c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF06C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001087e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1087E	17732 bytes
SHA-256: `90c9df275e5dd0e04a802f38b424d2a8081ef8d975d21aa6e9701a8e917d29e2`

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