Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9829cceab6e77b…

MALICIOUS

PDF

137.9 KB Created: 2021-07-24 21:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: cb7fd9fc8b5a7f38893c4d83d8e5d7de SHA-1: 46857c23cfdc500aef2bc56018981d4a81fa33d4 SHA-256: 7e9829cceab6e77bfc219200836903a8531c48d8e5df0560ee08fb71d61aeee7
196 Risk Score

Malware Insights

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

This PDF is identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm designed to distribute malicious content. The document's structure and heuristic firings strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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 http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c9247227e---55140720177.pdf In PDF document text
    • https://villatoscana-pi.it/userfiles/file/wasegotasaxumisi.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2787df1e1---lodupapilubuwex.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160752120dea59---beburodo.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210620193426.pdfIn PDF document text
    • http://hkacca.com/userfiles/69688772800.pdfIn PDF document text
    • http://thehigh86.com/clients/13680/File/tanewotixuropudijevesom.pdfIn PDF document text
    • http://udokutscher.de/gfx/userfiles/files/26902788585.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/bulekujezitojaginoxalulid.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1c58096b0---zupinimijuraxaru.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf30da4845---pepubisodonoxi.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607048745e739---zekidozoxefedidoruxu.pdfIn PDF document text
    • https://steammining.com/userfiles/file/vekulofosuroxitis.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4b44b4f12---madasugakemale.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46b1a06643---63164058005.pdfIn PDF document text
    • http://bukharageorgia.com/sites/default/files/file/zufudujumugesere.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/napedejelifipupuz.pdfIn PDF document text
    • https://www.bramfordgc.co.uk/ckfinder/userfiles/files/53269104197.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a46a890265d---nafokojogenavabo.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160861bc0119ab---69441376551.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/16fc138215572b06ac20c511ed9f6199/49264959163.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=intermediate+accounting+16th+edition+chapter+6+solutionsPDF link annotation
    • 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_off0001b5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5A7 18500 bytes
SHA-256: 1002d5674b6888f4f69e290b3c7340230b4beb4f450c813c2e52517475df6da7
font_01_sfnt_off0001e6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001fef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FEF4 11232 bytes
SHA-256: af5d691a2c97f8bb6c94fa71d2a1e37ec6b8c9317b382fa35cc30519e0141670

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