Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc1ee30df22ec6d…

MALICIOUS

PDF

84.1 KB Created: 2021-09-04 04:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 508562c10c83376caaf39841bea1b972 SHA-1: 9f3bdf74ca1a30f934b121bd101e86d3944b9ede SHA-256: 7bc1ee30df22ec6d2ac787d5d212cd10ad0bb70fd0c6fbdf304c28f37665ea00
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous domains, many of which are hosted on compromised WordPress sites or disposable hosting. The primary purpose appears to be directing users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/21uuivscvtc81plnrtvo56s9v6/pepozedamivefa.pdf In PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612b971838831---diwuj.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/gakovujafuw.pdfIn PDF document text
    • https://argumentua.com/i/file/pemegikidonenojemovagutep.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/38425115629.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/45276377888.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/95573632513.pdfIn PDF document text
    • http://fertilityupdates.com/userfiles/files/96746830036.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610bb0f2d82fa---2747826771.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c19be508d47---60352174045.pdfIn PDF document text
    • https://www.fangjin.org/ckfinder/userfiles/files/86532724043.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/80624113024.pdfIn PDF document text
    • http://nollve.com/img/editor/image/file/zuladodamagipigoxora.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f98cb45f05b---lugegoxorajuj.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16077aadda0fe0---73297932289.pdfIn PDF document text
    • http://wingprocess.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/reludi.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/qik785kf422mf6840ajg63osgp/44468832995.pdfIn PDF document text
    • https://fertilizergranulatorprice.com/d/files/gegukokeveverujexe.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/68c9c910126888004a55328d42fc88d3/34866360357.pdfIn PDF document text
    • https://jobtiara.com/files/files/ralozexuvo.pdfIn PDF document text
    • http://kronikarp.pl/ckfinder/userfiles/files/bafogifulosidedo.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/wobijowa.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/46392556089.pdfIn PDF document text
    • http://casadiriposomarsala.it/userfiles/files/46099212852.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=current+affairs+july+to+september+2019+pdf+downloadPDF 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_off0000dbd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD6 11720 bytes
SHA-256: 28b16aca4c8755f43e86799ce6156633b5cf1f3f32ba06ddf82783b41aedb6cd
font_01_sfnt_off0000f7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A8 19728 bytes
SHA-256: 1c779a5d91af42861a3e10a99a9b9f7a08daaa3e97bb905c349287725e4a16c9
font_02_sfnt_off00012a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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