Malicious PDF — malware analysis report

Static analysis result for SHA-256 79bea32aa11aaf22…

MALICIOUS

PDF

1001.2 KB Created: 2021-07-06 21:37:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: bf0ba6e3077316ab6da1751b687fbc29 SHA-1: c0e1b83d19059ee6e06206de5411de395f5537b5 SHA-256: 79bea32aa11aaf22c8d893a9778cdfbf7c195d8038d0a5351bcd0060300f5871
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document identified as malicious by ClamAV and exhibits characteristics of an advance-fee scam lure. It contains numerous external links, with one prominent URL pointing to a compromised WordPress upload directory. The document's structure and heuristic firings strongly suggest it is designed to deceive users into believing they are involved in a lottery or parcel delivery, requiring payment of fees.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4292

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://smidgel.ru/uplcv?utm_term=griffith+electrodynamics+solution+manual PDF link annotation
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c864c54600---89068961471.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608196065837e---pomotag.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/tapunilubonupovital.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/iq7n4kdukjinpq8ape8l4pml2m/jiridawasakepawo.pdfIn PDF document text
    • http://raisemoneyonline.org/clients/6/69/691275cf9a36cab982b2498ebdc715be/File/lerigewowipuda.pdfIn PDF document text
    • http://nsfeed.com/_UploadFile/Images/file/nutunebunara.pdfIn PDF document text
    • http://smartraoptics.com/fck_filemanager_upload/file/72587156140.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/39544922353.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/dusefujadosesuladog.pdfIn PDF document text
    • http://plainsailing.de/i/userfiles/files/18248833309.pdfIn PDF document text
    • http://stalmont.eu/userfiles/file/27053184373.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/tajow.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/ad9c2e0ef4f27dd8b277a412b2aa54ea/kefejisajafedegun.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/vapitituvogaxame.pdfIn PDF document text
    • http://mottaing.eu/userfiles/files/37673460586.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609557ef93512---84772711297.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/95266264346.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/6f5ff20073647be5fb905dfd9714d779/11781277783.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9eb2d4beb---lefutemopovigetabik.pdfIn PDF document text
    • https://room12shio4.com/contents//files/12757551131.pdfIn PDF document text
    • http://bclgrouptt.com/userfiles/file/rolimixolagufor.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/xokarekafofekobusuna.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/kggi68s6jcp059052jj1sb2iqb/37838087881.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703331c082d---86366823584.pdfIn PDF document text
    • http://18554080.com/userfiles/file/visuwemasogore.pdfIn PDF document text
    • http://weorderfood.com/uploads/files/77401469066.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/ccc2fd44e5d9f4cc40b6f25f191b04c7/rojisapibisimogaji.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_off000f2b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B45 21696 bytes
SHA-256: 7aa313952088585f9ce169f00aaf8cf1249a0479fd9c0be7e4203d3b0d84380b
font_01_sfnt_off000f6115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6115 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000f7938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7938 10992 bytes
SHA-256: 231d66bc72e214bbc4e7c387749eda7c3008666c28d8274f746670e6f6c17889

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