Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea8d1440967001b…

MALICIOUS

PDF

80.4 KB Created: 2021-09-11 22:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 35568bd94793266c0238c86a50cec17b SHA-1: d6056795ef9badf778c0bb15293470c14b344af9 SHA-256: eea8d1440967001b488b063a3916440ceaf872576078757e539418d1c8367c3b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are on disposable hosting and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The presence of external URIs and the ML classification strongly suggest the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://allytemp.ru/uplcv?utm_term=cydia+installer+full+version+free PDF link annotation
    • https://gbagencement.fr/uploads/file/govopame.pdfIn PDF document text
    • http://banquat.com/userfiles/files/777177047.pdfIn PDF document text
    • https://altonika.pro/files/fck/file/5959755571.pdfIn PDF document text
    • http://hanasushichoice.com/uploads/files/sujawelojakugorisedolana.pdfIn PDF document text
    • http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/54169553560.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/4240502750.pdfIn PDF document text
    • https://salvatoredivilio.it/userfiles/file/jovades.pdfIn PDF document text
    • http://artdental.hu/editor_up/pasazoxobemaxinigudolis.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/magumujimexif.pdfIn PDF document text
    • http://djpress.pl/Image/files/19613019051.pdfIn PDF document text
    • http://yacpa.org/yacpafiles/file/siwolosuk.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/zuwarij.pdfIn PDF document text
    • https://yodobashi-church.com/65185445939.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/46316570974.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/tugazevivenenumovum.pdfIn PDF document text
    • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/semarukod.pdfIn PDF document text
    • http://amghanoi.com/images/ckeditor/files/57668992911.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa8c6d50f5---73910153415.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_off0000d975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 16692 bytes
SHA-256: 62bfb6e0ea1d8bee8ef96eb75164d6bd0357fd4be23604bd50d5a68ed8224041
font_01_sfnt_off00010406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10406 10656 bytes
SHA-256: ea06b72a1ef44a249abefc526a6bebe2cd79ba0dffe4698811a2b259ddf2cbd8
font_02_sfnt_off00011ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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