Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a2855a240bcfd0…

MALICIOUS

PDF

74.4 KB Created: 2021-09-11 09:36:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 7a83301f80771a6d59d8630b7274d045 SHA-1: e4fb18a49732fa03af1ab7efbaa88c6fc576da88 SHA-256: a6a2855a240bcfd02d87cdd2bfc0297c659f4967767a0d11eb8924e096060dbe
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm, suggesting a phishing or malware distribution attempt. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://patrick-jardinage.fr/ckfinder/userfiles/files/bomiparumarivoduzefep.pdf In PDF document text
    • https://10glazsikeyrosa.ru/file/jorubijami.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/17367138399.pdfIn PDF document text
    • https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/bibajudub.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/fififip.pdfIn PDF document text
    • https://vetamblj.si/ckfinder/userfiles/files/29767691430.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/77870511507.pdfIn PDF document text
    • https://vcvscr.cz/www/www/fckphotos/file/19729536426.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/83851952539.pdfIn PDF document text
    • https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/85986891910.pdfIn PDF document text
    • http://netcentricnj.com/ckfinder/userfiles/files/garajudodopidunu.pdfIn PDF document text
    • http://bodegaadrover.com/userfiles/imagenes/sunuzusakemaf.pdfIn PDF document text
    • https://weldingportal.it/userfiles/file/jasapita.pdfIn PDF document text
    • http://gomientrung.vn/uploads/image/files/mibutopirofakofu.pdfIn PDF document text
    • https://sssmri.com/ckfinder/userfiles/files/41931532779.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/51291614062.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/73903647203.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/28541615964.pdfIn PDF document text
    • https://hssanesteban.cl/files/xedikevadofudimux.pdfIn PDF document text
    • https://giriconsultancy.com/content_files/files/65142962535.pdfIn PDF document text
    • http://szyoujin.com/UploadFile/file/20210906082358345.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=gupt+full+movie+bobby+deol+onlinePDF 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_off0000c00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC00E 16932 bytes
SHA-256: 4d8706236f2123b97792c129e1e28a06366b22d09a58b9e9c28b0d181e3f7173
font_01_sfnt_off0000ebe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE5 10688 bytes
SHA-256: e4e9d6630e79e6955ad5920dbe1c3681a351d80ae7d453f8369d560bb3f677c2
font_02_sfnt_off00010430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10430 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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