Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bf849c7e045a20b…

MALICIOUS

PDF

48.7 KB Created: 2021-07-09 13:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 359932e08365f8d9325fa1659eadbf9e SHA-1: a80187795b83caf54ec79221bec79185f8590a71 SHA-256: 0bf849c7e045a20bdb25d527d2efdaf288ed4b209498746676ece9765ba84748
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised CMS upload directories and disposable hosting. This indicates an attempt to host and distribute malicious content, likely phishing or malware, through a link farm. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5740

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://abwingssuffolk2.com/uploads/files/41131217117.pdf In PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aac3728b042---lufabaxo.pdfIn PDF document text
    • http://axwelindia.com/uploads/raxikudep.pdfIn PDF document text
    • https://frigosztufi.ro/ckfinder/userfiles/files/41299560836.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/64659b4dc7388813d41654fb2bde4dfa/towed.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607bebc1b486e---41689432668.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/kixajamujotafegenesetun.pdfIn PDF document text
    • http://geostudio.eu/userfiles/files/fopaj.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/7m7kusbqs9kncklodpli4klb83/15824424358.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/0dm2etci337ama40ebbbdufaeu/24466493841.pdfIn PDF document text
    • http://nctpa.biz/clients/5/51/51e593b678cc4707ea5ff7b662bcbdb9/File/94333692804.pdfIn PDF document text
    • https://mokhalasati.com/userfiles/files/68364894156.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c65dfc066c2---nasitatemasizeves.pdfIn PDF document text
    • https://birgatour.mn/js/ckfinder/userfiles/files/26410106915.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-4-30/20210430035958200608.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bf207e45ad6---jiwowoxu.pdfIn PDF document text
    • http://didaconcept.com/admin/fckeditor/file/76103137620.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/a64bd59aae132b43429538ca17480e48/xulubivamosuwawagogamej.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/2oc8t4v6g5l6sfc8hmbn3n0g01/96605832799.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3db043db8---22256376223.pdfIn PDF document text
    • http://insureatkk.com/ckfinder/userfiles/files/81176645388.pdfIn PDF document text
    • http://polskienarty.pl/data/aktualnosci_imgs/file/kukapazobuk.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/e3f37utuqne819psht878p256u/12511517541.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af859cceee7---sogeda.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c64dd9ec9a4---vijubesivugupogamotumax.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16077c1bb9f897---93668584617.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ec24dea84---ruxazologamiligaxexe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=romeo+and+juliet+practice+questionsPDF link annotation