Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9359db4e0ca8ea…

MALICIOUS

PDF

85.1 KB Created: 2021-09-02 06:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7dd26b32172a19ea0f86d96cc94ecb0b SHA-1: 114a048f8a9fb1cb42a8e83d380e589231ec55df SHA-256: ce9359db4e0ca8eabedd752ed51b872fd1e96d0d05f671c9308565712358e16f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous links pointing to compromised CMS upload directories and disposable hosting suggests a link farm designed to distribute malicious content or facilitate phishing. While no scripts were extracted, the PDF structure and link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/61d038dd0e9a275d17114a76cec44094/94689008081.pdf In PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160854cf52484c---jizosebe.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/75378948608.pdfIn PDF document text
    • http://nbmounts.com/userfiles/file/1629712248.pdfIn PDF document text
    • https://ultralloy.net/upload/files/xonuzomusimovegawewebije.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210806_041411.pdfIn PDF document text
    • http://marinaxaraes.com.br/ckfinder/userfiles/files/66446202926.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/edf26295c204ec4e9d3bd6a643a2683d/liforogesogewerude.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/gewilewujofunulamefezok.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/2273d4041ddaf0a1e8a0e80200cda9b5/5979676588.pdfIn PDF document text
    • http://futureinfashion.com/ckfinder/userfiles/files/bodoju.pdfIn PDF document text
    • http://serramentisiciliano.it/userfiles/files/26312456675.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f725be32c---22154068256.pdfIn PDF document text
    • http://plkorea77.com/ckupload/files/87953438661.pdfIn PDF document text
    • http://taxilitomerice.cz/ckfinder/userfiles/files/lizumosijudawafugenu.pdfIn PDF document text
    • https://mygo.com/ckfinder/userfiles/files/8915541080.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c89324ed76---kiwasawugoxetax.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f17eaa1f33a---gipezenogevujivil.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/7juilhj702hrmr1hm9okaq8ko3/vitagafezalobixede.pdfIn PDF document text
    • http://cancunday.com/travela/img/files/lupadizomujetezijoxibodox.pdfIn PDF document text
    • https://xn--z4qq44i.xn--kpry57d/upload/actfiles/92358098242.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608325093f941---zogitabapu.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/tcggsac0568jatlittq9jnd753/bidenakonax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=analog+to+digital+conversion+of+signalsPDF 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_off0000e4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0A 18532 bytes
SHA-256: 2bae955f08dde6310ae2140b89ae7fdda328b2cb373123846743ba0778483d01
font_02_sfnt_off00012dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAD 10696 bytes
SHA-256: 92983fcd4f681e648003cb5a7060c286a6fdc94b593dc0d9a1484e2fd83f42ff

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