Malicious PDF — malware analysis report

Static analysis result for SHA-256 8218140119cb8475…

MALICIOUS

PDF

96.9 KB Created: 2021-06-29 05:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c7594a57fbc0583a3b58de4865000605 SHA-1: e30a2ad28c16a6a588a954a906c9e5e987d18f87 SHA-256: 8218140119cb84751d63af8d72607827d357ec2b888e70afde1456d4d44fa096
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic flagging it as a 'Recovery secret / private key request' lure. The document's structure and embedded URLs suggest it is part of a phishing campaign, likely attempting to trick users into divulging sensitive information. While no scripts were explicitly extracted, the PDF format and the nature of the lure indicate potential for embedded malicious JavaScript or other exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://katyababash.com/images/uploads/file/88315194875.pdf In PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/gk2ct6n68rr7pr876emn43gq2k/marubidolavibowegu.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a8f5f31136d---30813951096.pdfIn PDF document text
    • http://www.mostenpo.jp/userfiles/files/mumutasuzowalavi.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/3330bc71b3ddfca64839f59c0bf1bf74/75764585678.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e351e72b0---gaxozikavudenixuliwewam.pdfIn PDF document text
    • https://kham.vn/userfiles/file/66899834984.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160aa6e10b68a0---dazelirisid.pdfIn PDF document text
    • https://mangmalungtea.com/userfiles/file/figixagakizowapux.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160927396dfbee---44191019787.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16081a4f82d9de---96453663816.pdfIn PDF document text
    • http://aiskreunion.com/clients/b/b4/b417c2091670ce0b0d78f4b231aea02c/File/7824765238.pdfIn PDF document text
    • http://otelm4b.ru/admin/ckfinder/userfiles/files/lipabomotonamoxigiwa.pdfIn PDF document text
    • http://perlawarmii.pl/userfiles/file/47372816101.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/3f8c0ac54141233cf1ddb4b887cf17b3/6392023863.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607012021e820---jevipewasosijunivufevewud.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160715b537f7af---fenozafasu.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/842b7tbs37nk6o7id07e4n61r4/tubejatekudorim.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/29be4ec5c01dd02171389a0284ba2511/taruxakuvolukix.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/94889250955.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c24dd8e6bc2---57532617177.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=ocr+from+pdfPDF 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_off00011749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11749 10004 bytes
SHA-256: 04604bd1cdb62d47ddb59878928e0c7ba0fcab62b08f587384c75f040a2a7ca9
font_01_sfnt_off00012d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D64 18564 bytes
SHA-256: ff59571223b5ec5f7e3dd4b4d7ee30ec410645448f9a792876d8b407752a9ccb
font_02_sfnt_off00015ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EC6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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