Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e62aa9f7a09de3…

MALICIOUS

PDF

72.8 KB Created: 2021-08-20 14:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e74d7b6a573f65b92300041c73c648b1 SHA-1: ad61b942a7e1e4b8051a498898a96b2f02cd0215 SHA-256: 69e62aa9f7a09de3b8b1557a2b6713e15fc7c9cda5dc9897d7748ed2451f027f
164 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to distribute malicious files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous external links on potentially compromised domains is a significant indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/51980794770.pdf In PDF document text
    • http://ttworld.hu/uploads/content_files/files/jumaribaruvavezorunerud.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ffebb70923f---wijupijifomivelurenam.pdfIn PDF document text
    • https://tw-itemaos.com/ckfinder/userfiles/files/83357930842.pdfIn PDF document text
    • http://eksternest.be/images/file/47579716620.pdfIn PDF document text
    • http://premsaktidal.in/userfiles/file/vugifagufosa.pdfIn PDF document text
    • https://qqhanoman.com/contents//files/nepakonelakakejexodeb.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2bb51116fe---rusudov.pdfIn PDF document text
    • http://kaithompson.com/userfiles/file/43572924040.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607129f212dc7---zetewisafabak.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baeef4e83ce---nipavubekusefuz.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/57863152276.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/pe1i3g9c6glsr3lkbc7kac42sr/28651668971.pdfIn PDF document text
    • https://unserbiokorb.ch/userfiles/file/fuzijovej.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/7kvfsh7ok70jkbvak42mhb8c54/dafofetomeza.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/b8a6f5b53079b298fb901838b8669ea2/ranitaxofisazo.pdfIn PDF document text
    • http://thetachikappasigmaalumni.org/clients/5/56/56ac51e2ee760b54d3ff8b7d53c877b7/File/13604375964.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/sufagapegak.pdfIn PDF document text
    • http://kryotherapie.net/neu/userfiles/file/zufatititalivuwemeka.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/bironujaruzapa.pdfIn PDF document text
    • http://techcessgroups.com/userfiles/file/7645582051.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1c4b59135---sidekivumufi.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ca78ee4e1b4---badamudewodizofakorugi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=shaadi+me+zaroor+aana+full+movie+online+hdPDF 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_off0000ba7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28D 16832 bytes
SHA-256: 53be129538a456bfa80ec432de328ef3c5a49f1f6d99e3684a331e273ea2224b
font_02_sfnt_off0000fe66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE66 10652 bytes
SHA-256: 1f525d76e9fb99ef503723401c71a4fe67a60bd757a81414a37f8c31b6fbf140

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