PDF malware analysis — malicious · 10d85f3375cb8a4a

MALICIOUS

PDF

70.3 KB Created: 2021-10-10 03:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 3410728a242d7e9a34db48378f51ec97 SHA-1: 6d8b6cef694835b554dc90c05bcb38456478cc88 SHA-256: 10d85f3375cb8a4acf302e183d434ed36de2c4a03d3deaac936844480eced6c2

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of multiple links and the nature of the hosting indicate an attempt to distribute phishing content or malware.

Machine Learning

Nyx PDF Classifier suspicious score 0.4905

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
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF 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.
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
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://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/8523aapl197sj922pohpaadj2o/54578833407.pdf In PDF document text
- http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/45829890671.pdfIn PDF document text
- https://sayurmateng.com/contents/files/vurudibinoromabesuvu.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb801e998e---jerav.pdfIn PDF document text
- http://dvg.asia/ckfinder/uploadfiles/files/87685715161.pdfIn PDF document text
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/042b3005cff4aa460693305232b0d128/wazepuveziwalapifapo.pdfIn PDF document text
- https://feldmann-spedition.de/pics/userfiles/file/lolurudizen.pdfIn PDF document text
- https://perfecthospitals.com/ckfinder/userfiles/files/91318641394.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148a930b79d0---zeweborasopile.pdfIn PDF document text
- http://gidromall.ru/img/uploads/file/92915902800.pdfIn PDF document text
- http://gainliving.com/upload/editor/file/dupaja.pdfIn PDF document text
- http://szamosiszerviz.hu/feltoltott/files/81701570618.pdfIn PDF document text
- http://unesco-mediain.cz/fckfiles/file/10052929407.pdfIn PDF document text
- https://g55net.com/webpagebuilder/ckfinder/userfiles/files/lonewo.pdfIn PDF document text
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b340ee1fbb---dirozuvuzuwot.pdfIn PDF document text
- https://talaa-obour.com/webmisr/uploadwebmisr/file/waxijetapebexagakusefu.pdfIn PDF document text
- http://hkacca.com/userfiles/48019927636.pdfIn PDF document text
- http://ceroki.com/image/files/sogakebutuxapino.pdfIn PDF document text
- http://sns.hu/_user/file/90380173444.pdfIn PDF document text
- http://heichapuzi.com/uploadfile/file/xusinuzipaperimusovur.pdfIn PDF document text
- https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/320c30d02d3220488368c2f1761fb5b2/podaji.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136187e8b031---97516026300.pdfIn PDF document text
- https://limberhurstgallery.com/imageuploads/file/85986144144.pdfIn PDF document text
- http://aaykpn.com/uploads/editor/files/84109765369.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=my+humps+mp3+downloadPDF link annotation
- 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_off0000b867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB867	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000d07e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD07E	10700 bytes
SHA-256: `53702179bce02d408413c25e9c9e5ff38e11f7cf1dce61fa40705db28131c9e6`
`font_02_sfnt_off0000e8e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8E8	20932 bytes
SHA-256: `8851aa10998a9af92fe7931df2d35396d04ab5461a1ba016508ce47507d56811`

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