Malicious PDF — malware analysis report

Static analysis result for SHA-256 d259679d61669214…

MALICIOUS

PDF

65.1 KB Created: 2021-07-18 04:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 982534a8974a7868300a3185c21f2c19 SHA-1: 05048f721bb104c4d72db51e4223e55d88f5324e SHA-256: d259679d61669214df7c9811a3022475bfad9528c2caa94beeaa037d933bb1bd
94 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to domains associated with compromised CMS uploads or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document functions as a link farm, likely to manipulate search engine results or redirect users to malicious sites. The ML classifier also flagged the PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5647

Heuristics 4

  • 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://adabaskimerkezi.com/upload/file/gawunajawaxepizese.pdf In PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9b67cf74b---xizokixazuda.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b1f191eeb---63920192085.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/zererada.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/18046570820.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/bumisugodaj.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/tepotewumuxatevipegobuna.pdfIn PDF document text
    • http://net-marketing.hu/images/files/38526330944.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/vixofu.pdfIn PDF document text
    • http://gld-lining.com/user_img/files/sagugerigu.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/k2ep31cpka8m0bpngc2svuipt4/52747545851.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/73578232.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/a8fb017b32949c686299ca17934300c3/tanipimesoditire.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/zileguwotezozuzelotufute.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3818d743e---birosirolusafamufezufefe.pdfIn PDF document text
    • http://www.christianhouseshare.com.au/ckfinder/userfiles/files/kimozapube.pdfIn PDF document text
    • http://summitremodelinginc.com/userfiles/files/woludigexadozuro.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/a527c1e0e110b2d0aee3099d293557b8/19679293110.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/aca9ed847092c2a7992e4c64223f7d91/67612795944.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/385653001.pdfIn PDF document text
    • http://pabrikangka.com/contents//files/79233600213.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c84d5b5dd82---xokolepinubaleponul.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c6a76b8e1---41195223369.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/pevow.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/ce9c3a002789ab8ef287a7ecf469ac5f/gegixuz.pdfIn PDF document text
    • https://slaterlighting.com/wp-content/plugins/super-forms/uploads/php/files/a97c7bad231f248173ae8994500c5d1b/33195947264.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=the+saxophone+is+a+double+reedPDF link annotation
    • 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_off0000f127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 10696 bytes
SHA-256: 580315dbe07c187459f44dd9a96b9427318b5045d31790d87c740fc73ce2916d