Malicious PDF — malware analysis report

Static analysis result for SHA-256 62039d6431bc1ddc…

MALICIOUS

PDF

70.3 KB Created: 2021-07-08 09:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 2d42170cf58a2d8a23f31d9135642a73 SHA-1: c32e02bd51b085e9c6b36cd06d67b44339ad4aa8 SHA-256: 62039d6431bc1ddce3a3005061465b1fabd93cb8f4c210f73a10ee6b5a87be9b
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites, including those hosted on compromised CMS platforms. The presence of these links suggests an attempt to lure users to potentially malicious sites for phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7427

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pistant.ru/uplcv?utm_term=beach+buggy+racing+unlimited+coins+apk+free+download PDF link annotation
    • http://ominocoibaffi.it/userfiles/files/lupiromedovuwikadezifowax.pdfIn PDF document text
    • https://xn--nmqu14inmf.com/upload/files/mavowojudenovowixifobow.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160965153d2ba0---jeninezotatotosak.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ab45da755ba54cd0386c58ef559d4102/lozopopow.pdfIn PDF document text
    • http://openendrep.com/userfiles/files/murubepa.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f9eb2f505---75836472610.pdfIn PDF document text
    • http://porpora.info/imagenes/imagenes_contenidos///ritojebumuwodumugoz.pdfIn PDF document text
    • http://sochistandart.com/ckfinder/userfiles/files/sezuwuvumexu.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/49679887104.pdfIn PDF document text
    • http://polyalpan.hu/_user/file/duletilikadaruxon.pdfIn PDF document text
    • http://cateringkieuan.com/uploads/userfiles/file/fimolafezuvudok.pdfIn PDF document text
    • http://leadershipcareer.kr/fckeditor/_upload/file/zisezogamibadis.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/cior6ldjf8r9qgrh707qheln6s/juferaganujevew.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a091ba8b196---44121358094.pdfIn PDF document text
    • https://preciseenergygroup.com/media/mogonid.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e51cbce643---dupuke.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/0tc3dtbapjkumqtnqlf4n634nk/80689315994.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/bebuwut.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cec990885f---zinipufuk.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/9475931161.pdfIn PDF document text
    • http://infinijewelry.com/userfiles/file/xugedimazas.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/6c9p9dosf3k4et8vholmfiosf0/49036592404.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 17128 bytes
SHA-256: f4c489da6354099445afd50f0a482ad2bd6ff3227859c7270af9d11ffae49bda

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