Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0addfb7583dcb4a…

MALICIOUS

PDF

77.2 KB Created: 2021-09-22 18:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b02d3bc3dcd5f69fdd3e39c6c4a1d7c0 SHA-1: 2feba537de14ffc8826774bf1ca59bb396b8bcae SHA-256: f0addfb7583dcb4a91833adf2d853480dc34ce813628c25efe9e76f2e7b07376
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are part of a link farm, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious workflow designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • 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://polins.org/public/userfiles/file/zimir.pdf In PDF document text
    • http://derkwoo.com/upload/editor/files/fovasa.pdfIn PDF document text
    • https://ntiverification.com/userfiles/file/gizululabefurosaxuduximum.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/477906887.pdfIn PDF document text
    • http://ylplj.com/ckfinder/userfiles/files/65543382097.pdfIn PDF document text
    • http://ylpqzl.com/ckfinder/userfiles/files/94896178840.pdfIn PDF document text
    • https://prcomponents.com/ckfinder/userfiles/files/14793672752.pdfIn PDF document text
    • http://spellenindex.nl/images/uploads/59870325372.pdfIn PDF document text
    • https://infotechloyalty.com/bot/ckfinder/uf/files/36936788680.pdfIn PDF document text
    • http://gemaeldeundobjekte.de/uploads/files/77488419866.pdfIn PDF document text
    • http://cissi.it/userfiles/files/bivedotizububevi.pdfIn PDF document text
    • http://nenkin-t.com/upload_img/ck/files/8948122948.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/57266084584.pdfIn PDF document text
    • http://qiangka.com/ckfinder/userfiles/files/nijib.pdfIn PDF document text
    • https://leonardscopysystems.com/home/leonards/public_html/ckfinder/userfiles/files/lepunuku.pdfIn PDF document text
    • http://maudchristan.nl/ckfinder/userfiles/files/40940051026.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/37151142290.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/nl1t6tm1hu30holfegn5224c5l/parenojenusutupuwizi.pdfIn PDF document text
    • http://nage-z.com/ckfinder/userfiles/files/tarug.pdfIn PDF document text
    • https://www.zochrot.org/ckfinder/userfiles/files/patibaganulosopo.pdfIn PDF document text
    • http://stefanourso.com/public/userfiles/file/kojafebi.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/68ffb1332adfad4c5961071298d106bf/5421159431.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=rush+hour+3d+androidPDF 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_off0000cdf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE607 10384 bytes
SHA-256: fce2b0cc086e2d45f0cee0aa11a0d8d18b80072b30b219f4317126b91d9b7d84
font_02_sfnt_off0000fd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD72 16388 bytes
SHA-256: 085654b2ec11da477bc354ffc7e875dc16cce55bfcc5e96cb5db1ac53a023094

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