Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e3f46d98d6600db…

MALICIOUS

PDF

62.3 KB Created: 2021-08-16 04:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ff7b45880fad5720bda80dba6ef18699 SHA-1: a0e83dffa9558be5fbe2db2a4db236be11c4687d SHA-256: 2e3f46d98d6600db94157556109d6cbc9023284886c9aeac649385b597ed33f0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and disposable hosting, likely to distribute further malicious payloads. The PDF structure and embedded links strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9854

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 http://chinoboxingclub.com/clients/36032/File/98858323056.pdf In PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/f0779d553547ed9348f0ab1bc31ca40f/wuzuvasukepukevuso.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/16095bdb78893c---sivipelabifupen.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607eae13885ec---26162450905.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1608514df38af0---xatemevofunodagujixifir.pdfIn PDF document text
    • https://www.espaciocultivarte.com/ckfinder/userfiles/files/1399332803.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610f97299e4c4---7244837049.pdfIn PDF document text
    • http://mesterek.net/tmp/kaguw.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f6e69ec93---54583972166.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077d3aa8fa18---99813275650.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/qgrg2h9nrl40dg29sjh5ncuc61/18028602616.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/48093427743.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/381d9e52f1746ed7ba56881e0b127f43/27428484380.pdfIn PDF document text
    • http://msamericapageant.com/clients/873634/File/jomeloli.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/fasokamo.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210519132328.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160724f9b653e5---23393772121.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06ccf97b05---61147562848.pdfIn PDF document text
    • https://tekstilkentrehber.com/upload/ckfinder/files/98376217829.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/15cfcdedad05f2491e1337f76342bbcc/fanakejiko.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/jseji1ohvnbj2daenuah4rr09v/36523625157.pdfIn PDF document text
    • https://scriptdd.com/_file/file/56340134595.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=exercices+mesures+de+masse+ce2PDF link annotation

Related samples 8

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