Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7e080b4295710e…

MALICIOUS

PDF

43.4 KB Created: 2021-07-14 00:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 3ee6be7599b60a61f2deabcf1b4a5db2 SHA-1: 613954ba2fe03e76cba83d2ee737e6603f08c2bd SHA-256: 8f7e080b4295710e537f25a7a84a8797c1bc82b0c6c1db943f11eacb036856cc
182 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories, contains embedded JavaScript and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6866

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 43 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://infrive.ru/uplcv?utm_term=what+to+say+when+asked+to+tell+about+yourself+in+an+interview PDF link annotation
    • http://lube-stc.com/ckfinder/userfiles/files/zimusifoxonizuvijilod.pdfIn PDF document text
    • http://klick-tipp.info/ckfinder/userfiles/publics/files/14857284654.pdfIn PDF document text
    • http://pajurioverslas.lt/ckfinder/userfiles/files/neperisobasakog.pdfIn PDF document text
    • https://408of53crownstreet.com/assets/media/files/fojubinazumumegap.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769212de2db---72009632496.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d2626b964---vodigizubixulabe.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd146f3b19---pupirojowakut.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/2683f6799f73ffb30159b2c3df02ee2b/59667488888.pdfIn PDF document text
    • http://sp3siemianowice.pl/userFiles/files/11265296608.pdfIn PDF document text
    • https://people11people.gr/uploads/File/84307268029.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/9k1en5v3ve1i1oilr2vhpekvse/wigekikimabiwudaboxon.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a458a869638---5671506690.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/jugijuvejebubotur.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075766711591---zamuzowo.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c019fc001f---10375531905.pdfIn PDF document text
    • http://vizesblokk.hu/files/file/worosunodelefanij.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16085435e22c91---74134818983.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/59550583859.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16088c5892ac44---sunalinexeseko.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c569862be45---72990985532.pdfIn PDF document text
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210607182623.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/3h2q5a721rn4prkv9313i2knad/delivitu.pdfIn PDF document text
    • https://konferencii.ru/js/ckfinder/userfiles/files/70490810960.pdfIn PDF document text

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