Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e26a8952767646…

MALICIOUS

PDF

84.9 KB Created: 2021-09-01 03:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7a6c3766bf9bd9093e77f74ebe22339b SHA-1: 75bbbeca2276aa3a96e3099b596728060714b354 SHA-256: f2e26a8952767646d9b13df76f95068abb7d9907aa15fb7552e20e1e8cfaacae
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm to distribute malicious content. The primary intent appears to be directing users to external, potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://garglob.ru/uplcv?utm_term=what+does+creed+mean+in+the+bible PDF link annotation
    • http://homeshopeez.com/uploaded_files/userfiles/files/gojusede.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ebe3385c4---34103134696.pdfIn PDF document text
    • http://hnfhdc.com/UpLoadFile/2021082115211625949.pdfIn PDF document text
    • http://www.jacenter.org/js/ckfinder/userfiles/files/49427268760.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/b294e738bef719bc0f86dea25a2b5b88/kibaladisalejiror.pdfIn PDF document text
    • https://xn--b8qxb801j.tw/upload/files/petiruputitig.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/nc17mcp3higpt26r4ebm31ddsu/6801718014.pdfIn PDF document text
    • https://salvatoredivilio.it/userfiles/file/36921026423.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/ludakefiwuxitenuwalulo.pdfIn PDF document text
    • http://minhtoangalaxyhotel.vn/app/webroot/files/ckfinder/files/45294806997.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/pekafurapurupuxodejotidu.pdfIn PDF document text
    • http://boldino-hotel.com/ckfinder/userfiles/files/31667099651.pdfIn PDF document text
    • http://imhome-listings.com/userfiles/files/gurodunekubizupexida.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e70ea8974---mizumixupowadige.pdfIn PDF document text
    • https://warsztatgdynia.pl/app/webroot/media/files/jodudopomipi.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16086ae5c354f5---sevonosebigufojoboxiviram.pdfIn PDF document text
    • http://tele-fonika.pl/upload/file/befev.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/65928592361.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160d1db5d28fe8---46720635060.pdfIn PDF document text
    • http://bycongroup.com/UserFiles/file/28923221352.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/e4c994314b7077a01e4f98614c9f6cc6/97755587721.pdfIn PDF document text
    • https://porterbrothersltd.com/app/webroot/uploads/duluvotifonaja.pdfIn PDF document text
    • http://solyaris.pro/admin/ckfinder/userfiles/files/rupuzololebugu.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_off0000e56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD86 10768 bytes
SHA-256: ae2bc726b461787448311dc53f931d8f7072a55fc21de89573d0969a5f1e5f33
font_02_sfnt_off00011619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11619 17996 bytes
SHA-256: 164a9e20be50221b226ace5b0f8384b3ea38c8f9abb7c70f31a128597530da45

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