Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cce48880351d1ab…

MALICIOUS

PDF

65.0 KB Created: 2021-09-05 13:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 2da8598c064e736516b79fcbfb7477d4 SHA-1: 0f78fa5ab359506d2150ba6d337ec937350f7734 SHA-256: 9cce48880351d1abd2ad0c57dbe58fce8a50bf79d73cfba51a7769397ac01646
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external URIs and link farms, many pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and content suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7793

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
  • 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
  • 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://drafthe.ru/uplcv?utm_term=biometry+pdf+books PDF link annotation
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/vs27t7rk32a6bhq5vfrk2eimcr/dijenufepokowujabajozuw.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6780db40af---votoxakawewulofurufununil.pdfIn PDF document text
    • http://n2nlah.org/UserFiles/file/jiruvugil.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/3c91c7d406e4908b1fb6e6c74f7decb9/samikosozipakixowanijib.pdfIn PDF document text
    • http://rocb-ap.org/file_media/file_image/file/3868261622.pdfIn PDF document text
    • https://istihdamhaberleri.com/upload/ckfinder/files/2763513120.pdfIn PDF document text
    • http://fcvperu.org/data/fcvperu/userfiles/file/19785254837.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/17368371901.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3ac975a72---69689284153.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e6f27713e---sabaso.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160856c2078080---47202230888.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/6kn0s6m677u647tedhlitao1i5/lopefik.pdfIn PDF document text
    • https://latrinquette.com/upload/editor/file/23582849043.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/330580013ad80643c1f0314df41c62d1/bawowuxonemelun.pdfIn PDF document text
    • http://cuacongtudongbinhduong.com/upload/files/kapazuxafegufifidelidiko.pdfIn PDF document text
    • https://biblioteka-koneck.pl/ckfinder/userfiles/files/mapanijanumuvuxanija.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/d9be2mn2hei4nat381fd51s21v/98735389458.pdfIn PDF document text
    • http://888chji.com/userfiles/files/56266193744.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160814925bd247---vosesabefibosaxizoriroka.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/06uvn48jp504a7ic7m8bfcarf4/bikiwetekufepinubepoxika.pdfIn PDF document text
    • http://vhs1962.com/clients/b/b9/b967f936f519796c2a696a6ed1da67f9/File/tegirajuderegitabib.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4835eb899---girusazisomonet.pdfIn PDF document text
    • https://www.agencesramos.com/ckfinder/userfiles/files/46437218654.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/30365741220.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9B 17488 bytes
SHA-256: 41b0cb3e99516eed98727b599ef0ec30aee3273bc4670bdcecc355922dcddede

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