Malicious PDF — malware analysis report

Static analysis result for SHA-256 00146046966c490e…

MALICIOUS

PDF

80.3 KB Created: 2021-09-17 15:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1ce21e5dca05ddbb2389bf40cef9168c SHA-1: daa00dbda2d8db45aaa1b6354c8e4e36c17aec48 SHA-256: 00146046966c490e6e4195c31375f2f1ea8d4e895dd1a29fde6f1b4f8f13ec68
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains, indicating a link farm designed to redirect users. ClamAV and ML classifiers confirm malicious intent, specifically flagging it as phishing and a trojan. The embedded JavaScript likely facilitates the redirection or further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://philabc.ru/uplcv?utm_term=how+to+set+launcher+in+android PDF link annotation
    • https://ssmavidiyar.com/public/content-images/files/sivoluzotifakaxufifil.pdfIn PDF document text
    • https://rhuyscampingcar.fr/images/files/62746414880.pdfIn PDF document text
    • https://nyirfa.hu/uploads/files/zepibakonafopafuwun.pdfIn PDF document text
    • http://twilaw.com/files/files/19266536580.pdfIn PDF document text
    • http://cochemical.com/upload/files/32987554365.pdfIn PDF document text
    • https://haisanquangninh.org/data/dulieu/files/34218920983.pdfIn PDF document text
    • http://m-styleauto.com/js/upload/files/63888712371.pdfIn PDF document text
    • http://elitaliaweb.it/upload/file/jamuwuzozora.pdfIn PDF document text
    • https://soechi.id/userfiles/file/49886526824.pdfIn PDF document text
    • https://etimes.mn/uploads/files/9846070317.pdfIn PDF document text
    • https://www.sudoku-cool.com/ckfinder/userfiles/files/gefezaxuxoferenakirux.pdfIn PDF document text
    • https://gosselindesign.com/images/from_fckeditor/fichiers/28791107530.pdfIn PDF document text
    • http://glavis.biz/userfiles/file/56108323341.pdfIn PDF document text
    • http://thermocomfort.ca/userfiles/file/68243413337.pdfIn PDF document text
    • https://tepatsasaran.com/contents/files/suritezefede.pdfIn PDF document text
    • http://philipp-haberland.de/images/upload/file/mokepowegojivisebopa.pdfIn PDF document text
    • http://yonezawanet.jp/units/24250/zcycom/files/xitedeba.pdfIn PDF document text
    • http://uptownherndon.com/uploads/files/xebadawutozixujijabos.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/ccf952a388c2d25b6a12c3cfd3df3614/sakifabunefer.pdfIn PDF document text
    • https://www.akilciilacdernegi.com/ckfinder/userfiles/files/49449392535.pdfIn PDF document text
    • http://wxhsbl.com/ckfinder/userfiles/files/20210902_032217.pdfIn PDF document text
    • http://hoilhpnqbthanh.com/upload/file/nazifolotalit.pdfIn PDF document text
    • https://www.thc.gda.pl/ckfinder/userfiles/files/dexelo.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.

FilenameKindSourceSize
font_00_sfnt_off0000d540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD540 10644 bytes
SHA-256: 84306ff3c2354c564e115640fd99b628ff0088e177084bd9b3129343444f1cfc
font_01_sfnt_off0000ed8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8F 17904 bytes
SHA-256: b84f18830b81e0f9f7cbbb3ed9781923dfb66b457fe974df5418231b5eab8224
font_02_sfnt_off00011b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B88 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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