Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9df5b02acf1aefe…

MALICIOUS

PDF

74.8 KB Created: 2021-10-06 00:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: c546c9a32640dd13bca47f5154d19652 SHA-1: 493c6422266ff7f272be335f0c138c62039f6cc8 SHA-256: e9df5b02acf1aefe06a0d33c0f29998b3481c587953d7c6f8c00f0b213537cb2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. The presence of numerous embedded URLs, many pointing to unknown or potentially malicious domains, strongly suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6198

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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 http://mobydick-band.de/fckdata/file/worosivojak.pdf In PDF document text
    • https://pabxlg.com/userfiles/file/12830171446.pdfIn PDF document text
    • http://www.ez4parcel.net/upfile/files/2021/10/01/buzuroluv.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/7410735980.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name/files/75881202975.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210922_9301F2721CB60BB5.pdfIn PDF document text
    • http://okfilm.kr/userData/board/file/tawuzexaditizajuzuk.pdfIn PDF document text
    • http://manenshop.com/upload/files/99338689715.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/nabokimox.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/31018116417.pdfIn PDF document text
    • http://physio-praxismitte.de/userfiles/90609134144.pdfIn PDF document text
    • http://sydjpg.com/images/upload/file/20210926_085653_106.pdfIn PDF document text
    • http://zjnep.com/ckeditor/ckfinder/userfiles/files/fitewuwikupofepidanuvok.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/41823134798.pdfIn PDF document text
    • https://lanegarrett.net/userfiles/file/pobufafebirisogupe.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161540011b3e86---62297549789.pdfIn PDF document text
    • http://xn--h49al71atridzo.com/userData/board/file/devetowiguri.pdfIn PDF document text
    • https://museuminiaturesbesalu.com/files/71313993399.pdfIn PDF document text
    • http://thekitchendesignstudio.org/uploads/files/47488758874.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/19749139257.pdfIn PDF document text
    • http://df-foundry.net/d/files/37925197583.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/ad5ef6a0e8a3dd0a55ffe8de5ed2af5d/7552185740.pdfIn PDF document text
    • http://samnakthodrahassob.com/userfiles/file/37998768846.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/45011662064.pdfIn PDF document text
    • http://ipost.mn/ckfinder/userfiles/files/zerurunozogudisemet.pdfIn PDF document text
    • http://www.supair-lux.hu/ckfinder/userfiles/files/96849013016.pdfIn PDF document text
    • http://rabwork.com/media/file/livetexuriguj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=wreck+it+ralph+all+racersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DF 20128 bytes
SHA-256: 89ba7f51c1197ad664bb7027d77356e40ba31be27d494a91489334f13b7c4298

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