Malicious PDF — malware analysis report

Static analysis result for SHA-256 e80dd98cee32af64…

MALICIOUS

PDF

82.4 KB Created: 2021-06-09 21:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 21325e4b1cd7d8d780efb6a237410d32 SHA-1: 6a858c60170024190ef8987582ecb4cc259e06e0 SHA-256: e80dd98cee32af648b316770a0616a926821f3426324fe7639fbe781c80715c6
156 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload directories and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs and link farm structure indicate an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 https://inwebjor.ru/uplcv?utm_term=bepanah+serial+title+song+download+pagalworld PDF link annotation
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606d59aed7507---dumotijesetepegizax.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bc988255e26---56095884908.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/59895217017.pdfIn PDF document text
    • http://baikalspring.ru/ckfinder/userfiles/files/85583057708.pdfIn PDF document text
    • https://fallsplat.se/file/11044872697.pdfIn PDF document text
    • https://paperland.bg/uploads/file/15694526874.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c634479f---jisekejugorowajewenazej.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/5bdf24f5e4536aa0639c0c0866701fff/kimixirevegikisito.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/85mf7qggtodv3l4jc969m0ie5l/72598669906.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1900c0683---1572429972.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/6b96c3bee69ecaeeaa0896d43b35f62e/rupav.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/95d19a607437219f0644c56174bd446b/bisumanuzepede.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160818506c4e45---tokox.pdfIn PDF document text
    • http://mg001.cn/upload_fck/file/2021-5-11/20210511190113427920.pdfIn PDF document text
    • http://ldbell1965.net/clients/85689/File/kegagoz.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7e0ed6819---32821343455.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE546 5360 bytes
SHA-256: d22d61769227b56f6178385424d2ce0c117ce0f519a1401256ee7743177f67cc
font_01_sfnt_off0000f783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF783 1760 bytes
SHA-256: 658a8f3ee3302ee2115b275549977f604d2682c5b40954e2bd5af249e8aba805
font_02_sfnt_off00010036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10036 10748 bytes
SHA-256: 18d483922aa5d4b607e28e236e717c024ab5213590939fdf0a14bf5261480e16
font_03_sfnt_off00012564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12564 16628 bytes
SHA-256: 4638a5fdf36364d780f4349e24c0c9be83728015a7bbe9c532e2045e82e661f9

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