Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33f64e422877eb5…

MALICIOUS

PDF

85.7 KB Created: 2021-09-19 14:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8588d7da633d112288f86153186aa8df SHA-1: 9c9a6bc8462917e8817ceec20e10c4eec70d2872 SHA-256: e33f64e422877eb50ffc7317f4428b86eb0c2f459776aee6ca271e917017b57e
126 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 on disposable hosting, indicating a phishing or malware distribution attempt. ClamAV and ML classifiers strongly flagged this file as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://crysiq.ru/uplcv?utm_term=pokemon+card+set+symbols+list PDF link annotation
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/48840540458.pdfIn PDF document text
    • https://argumentua.com/i/file/kemenomuxi.pdfIn PDF document text
    • https://onecre.com/images/content/files/sugesejizepitovuvaguwol.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/47764858117.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe011c3323---9473032048.pdfIn PDF document text
    • https://mps-india.com/userfiles/files/sopinikowijakimawubodig.pdfIn PDF document text
    • http://poddertradingandindustries.com/userfiles/file/56496982902.pdfIn PDF document text
    • http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nalubi.pdfIn PDF document text
    • https://bharatbiodiesel.com/userfiles/file/xuruzakupenafuxewedewuwi.pdfIn PDF document text
    • http://allycatering.com/userfiles/potatave.pdfIn PDF document text
    • http://appextskihjthj.handysociality.com/upload/files/dexos.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/58952662358.pdfIn PDF document text
    • http://luberoff.com/userfiles/file/59661126859.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/kejoxifedim.pdfIn PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/21360621468.pdfIn PDF document text
    • http://amdind.com/userfiles/file/nowaxumew.pdfIn PDF document text
    • https://ladymamashop.com/uploads/files/202109071632139254.pdfIn PDF document text
    • http://tivati.com/uploads/userfiles/file/84514798266.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/81466788548.pdfIn PDF document text
    • https://valgott.com/images/userfiles/file/jebefapezeguped.pdfIn PDF document text
    • http://ozanatalan.com/iboard/includes/userfiles/files/juxeze.pdfIn PDF document text
    • http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/punezororurojabe.pdfIn PDF document text
    • http://gyn-ordi.at/myPix/file/gadedivavubene.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/j6dgbro48tqb23brfngqc968l0/18939938957.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_off0000e62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE41 18544 bytes
SHA-256: e0c89fd72a3efa91ff933432b13c5e20e26d1beca39c11bd37b5c4dfbdb7a989
font_02_sfnt_off00012e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E8D 10880 bytes
SHA-256: 01484f399d98815f036ce9418f66b51490b0b3c92904afb711464d71a9894ef7

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