Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6deeaca7e0c5ff…

MALICIOUS

PDF

87.4 KB Created: 2021-09-10 04:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: eadaf1b4cb44e4e72b661029f351ddd5 SHA-1: 574c3d8de8accee166db5d48251031d9b96a1559 SHA-256: fa6deeaca7e0c5ffe48b75747a8caf2564ead24047a98f0c4615eba363aa8380
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It impersonates Amazon and contains a link farm pointing to various domains, including compromised CMS uploads and disposable hosting, likely to redirect users to a credential harvesting page. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit user interaction via malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=best+iptv+app+android+box.
  • 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://clingac.com/d/files/pizaboluditopopeku.pdf In PDF document text
    • http://aptekainternetowa.net/_mdm_apteki/file/wekulamigepijeximon.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/ec9d95b97f94d63ce3b8797751e31a6d/xabofuripesob.pdfIn PDF document text
    • http://mrhobbscoffee.com/images/uploads/file/fosixukugub.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/43967232202.pdfIn PDF document text
    • http://belovosushi.ru/files/87355469420.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613175d367031---detupizezivobebome.pdfIn PDF document text
    • http://tanphatinst.com/vietkiendo/upload/file/tukidosamogiwobuvotuzuxu.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/45047819010.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/bobutirim.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/11220554322.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/161370572bf0c5---86792830720.pdfIn PDF document text
    • http://ain.proximeo.com/ckfinder/userfiles/files/31190660011.pdfIn PDF document text
    • http://lanaecoloridabruzzo.it/userfiles/file/xabesosenetupoke.pdfIn PDF document text
    • http://chipgene.com/image/files/20210905_020100.pdfIn PDF document text
    • https://soudurelauziere.com/upload/editor/file/70595651360.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/65134391830.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ee20c46d0---digeb.pdfIn PDF document text
    • https://rajatotogroup2.com/contents/files/33651923088.pdfIn PDF document text
    • https://newegys.egyseg.eu/ckfinder/userfiles/files/sutetiwalofixenidesobelu.pdfIn PDF document text
    • http://bigdoughpizza.com/uploads/files/winulubuferegewevov.pdfIn PDF document text
    • https://farmaciasacoor.com/site/upload/file/ditalafesolalimis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=best+iptv+app+android+boxPDF 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_off0000f163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF163 17744 bytes
SHA-256: 602dd1fc73abcda581bbbfabaf99cd2ae3a16a3a9b1244aa4ec1fb66a1845b31
font_01_sfnt_off00011f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6D 10700 bytes
SHA-256: 252c91ca4926f81f7e92fc899c6eba836d190c0d1430290b5f194f198bd95f4f
font_02_sfnt_off000137f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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