Malicious PDF — malware analysis report

Static analysis result for SHA-256 12fddf71e70f6cc1…

MALICIOUS

PDF

86.9 KB Created: 2021-06-29 15:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: f9b329079176a6a7541311ff89649ce0 SHA-1: 918e882e8369a3b4ea463bf75717077ff41c712e SHA-256: 12fddf71e70f6cc14dfd8dee160120a1d48276b7022980b3b4c47a24f0aa6d94
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external sites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gz-theoutfit.com/UploadFiles/FCKeditor/20210619030441.pdf In PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608999c375194---86742568044.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/8976444326.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/tidukopowefebojowejogow.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/27q1eflmmu82rssivgt801uemh/36735662144.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/87c7fc24f5f77ea77984cdc2531fc409/xinidagusilusi.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/1dae5313ef7084cbb7ccd750fac14c0c/93782568484.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/50282274750.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cbaf66a1493---26355028573.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///zovebepi.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/a4e4d113924a3e3d13a577e258cb259c/pakivipub.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bae4e7edf04---doxalapukifixuludadif.pdfIn PDF document text
    • http://lideparts.com/userfiles/file/1620867764.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a41d2b21341---fajekaxudabenasud.pdfIn PDF document text
    • http://nebovsem.ru/app/webroot/files/files/sisewefuxaxave.pdfIn PDF document text
    • http://stmarys-perthamboy.com/upload/File/bafepuwataziwemo.pdfIn PDF document text
    • http://liburnia.pl/userfiles/file/wolaturikaboziwawa.pdfIn PDF document text
    • https://rm-parketi.si/uploads/56308468556.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/silesosusixojula.pdfIn PDF document text
    • https://srmhospitalities.com/images/bulk_images/files/wugoritis.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bezewuxofuputudaw.pdfIn PDF document text
    • http://munsusa.org/userfiles/file/20210515044911.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16084b8230c576---69450450877.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=loaves+and+fishes+volunteerPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DB 17408 bytes
SHA-256: 3a9713108c9f0b174ec65def8a66fd0d139b45855bdda8e23a62d5cf2a2a5887
font_01_sfnt_off00011e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E59 10572 bytes
SHA-256: c45be641a4e491d391f54375b10c63c5aedc0d147b577973000f234fb9b0fefb
font_02_sfnt_off00013666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13666 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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