Malicious PDF — malware analysis report

Static analysis result for SHA-256 b219ed6ca0633b89…

MALICIOUS

PDF

82.0 KB Created: 2021-09-23 10:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 1ec830793fc70bf79a3a1bae60403f65 SHA-1: f348f2c2610df758c8d89da1e930d8c399b240f4 SHA-256: b219ed6ca0633b89414f94545bb4f03f1a13ff5ba9ae42976db786321327feac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS uploads. The document body is unreadable, but the presence of numerous URLs suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • 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.
  • 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://mos-craciun-inchiriere.ro/fckfiles/file/32716742171.pdf In PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/161497637f4173---fejewuzipokozibomen.pdfIn PDF document text
    • https://medicentrumnz.eu/medicentrum/files/file/bofijagelavim.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/14545460459.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/miniwatolomifazufuxobojog.pdfIn PDF document text
    • http://mjacz.cz/soubory/files/19394266530.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ab03ccb5b---mujotunirozanuxagisarano.pdfIn PDF document text
    • http://caogenzhiben.com/filespath/files/20210912174631.pdfIn PDF document text
    • http://wernitznigg.at/files/69511891226.pdfIn PDF document text
    • http://cz-synergy.cz/data/file/wivemozovotu.pdfIn PDF document text
    • http://www.uc-kushiro.net/images/library/File/82931109890.pdfIn PDF document text
    • http://schokofontaene.de/idata/23120383974.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/161423ecfd0f2a---68746293861.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613944f186806---nalodifomo.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/82f70bfbe239509eaa6cf6b3d7f46b9e/63362502946.pdfIn PDF document text
    • http://tupnate.com/ckfinder/userfiles/files/wefawimixezozejukuge.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/61935075351.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/52870623825.pdfIn PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/1332333185.pdfIn PDF document text
    • http://namhungholdings.com/uploads/ckfinder/files/3978119839.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/fabal.pdfIn PDF document text
    • http://www.neoneofitou.com/ckfinder/userfiles/files/80687521386.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/wodapudofozakemisugojenut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=i+love+you+silly+episode+6+full+moviePDF 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_off0000dc01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC01 17688 bytes
SHA-256: 25f7a057255a0657e638b466298a8b50a803bd73d07e9931851b99d7a69002ab
font_01_sfnt_off000109c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000121dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DD 10596 bytes
SHA-256: d20e010a27338dfb8d4e2a0b7b3dd3777a9fa1d6b80460283630eeece8157efc

Open this report in the interactive analyzer, or submit your own file for analysis.