Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0982b46fb2af4ff…

MALICIOUS

PDF

85.5 KB Created: 2021-09-21 01:23:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 44db6ee26ad2cde2f157ca653bda0856 SHA-1: a1121013815903a4658a8b419a2f4c6c9e9a35b2 SHA-256: e0982b46fb2af4ff1aec0cd62d9389404d5ff92093b5ae7e4ccb4d5d730d7155
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan. The presence of multiple external URI heuristics and link farm indicators strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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
  • 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
  • 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://crewmak.ru/uplcv?utm_term=projectm+pro+apk PDF link annotation
    • http://jyjjapan.jp/files/ckeditor/files/zegugekomanil.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/vejenetigi.pdfIn PDF document text
    • https://ecpa.fr/uploaded/file/73305559894.pdfIn PDF document text
    • http://air-con.ru/upload/files/vutexasegevuvojesesetovi.pdfIn PDF document text
    • http://chinalabware.net/d/files/bavesixopepotubefemo.pdfIn PDF document text
    • https://www.vpn-solutions.com.pe/ckfinder/userfiles/files/61830753617.pdfIn PDF document text
    • https://tunhuaduytan.com/upload/userfiles/files/51487407325.pdfIn PDF document text
    • https://journeywithmypet.com/ckfinder/userfiles/files/37025384900.pdfIn PDF document text
    • http://tourhong.com/FileData/ckfinder/files/20210903_92508320D54FEF3B.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614046219d356---98371445080.pdfIn PDF document text
    • http://infunplastic.com/d/files/15443088246.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/vokepexop.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/buxutezinokuronomuli.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139bf07ae66b---govonegupoduzuguxu.pdfIn PDF document text
    • https://clicksnepal.grnca.org/img/files/files/filubanufojabuzetufaxil.pdfIn PDF document text
    • https://alpinebadmintonacademy.com/ckfinder/userfiles/files/fomumanosot.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/04442945075cd8beb267a8b3306dd78f/27282413239.pdfIn PDF document text
    • https://intrastorg.com/userfiles/file/pajaxigu.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/161480ea75a73b---66972634534.pdfIn PDF document text
    • http://hiredriver.com/uploads/assets/files/24060509909.pdfIn PDF document text
    • https://essuances.com/ckfinder/userfiles/files/rawogebimo.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7db7e77ad---bevulozuwinesoberufunekok.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2fc0600a5---golijizapeluxi.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/29469966851.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/6ebe7m6gem22o5amvisvkvbdae/toganisejabufa.pdfIn PDF document text
    • https://bruceautoservice.com/files/file/12779885105.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_off0000db3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3E 10348 bytes
SHA-256: 927d63be3aba4c0d51df5f755d6c6846bddbb9a1770310ff65fd4b44292a684a
font_01_sfnt_off0000f2b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B4 23564 bytes
SHA-256: 3fb9ad37e7f27c6ed40510ec461d5bca6b1a012fc2bffe23af4e52eb43440b01
font_02_sfnt_off0001308a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1308A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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