Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d972c749328d0dc…

MALICIOUS

PDF

90.7 KB Created: 2021-07-08 05:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: e1b52e085328f5a5439537ebf1893e35 SHA-1: 956ceb96b964ada4b520c1ce880a0cc24a7342fb SHA-256: 3d972c749328d0dc54878cab72bc4f6f1ae036eb81cdfe44d9433772f6bb2fcf
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised websites, specifically leveraging WordPress form-craft plugin uploads. The primary purpose appears to be directing users to potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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.
  • 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://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f61ec3f436---41242605755.pdf In PDF document text
    • http://dgjst.com/upfile/file/zuxobitijifumunotutam.pdfIn PDF document text
    • http://tornado69.com/clients/40643/File/58340779973.pdfIn PDF document text
    • http://targhevaticane.it/userfiles/files/desulurulov.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6360efa06---78067239189.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5c2d4a9a5c---69859195423.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160917c2d0bfe2---77517990923.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/v070v2rp99n7g1d433fseu3rme/fifokidibufana.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/aa5v6bhp5lnpogl21hs00dvsrr/tipisegizasofefafi.pdfIn PDF document text
    • https://pearproperties.in/userfiles/file/65225995598.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076123416f83---kenurodanaj.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608154439bee6---funeravuzasu.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa32894e9c---limomatotipuz.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/tumexuse.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160741cc620e5d---gaxujamaxixudotilu.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/30377591667.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/d2cf7c2554a943a80dd52d456c2c80fb/wovatalidarepegat.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/99302554620.pdfIn PDF document text
    • http://holycrossyouthministryasp.org/clients/f/fa/fa15eac34f6f8ef5a8ada011ffef1578/File/50951556151.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/34626624280.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/e54b51916ead1afc4e5ff17fd37ea8e5/lokeroxujiserujirotuko.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/45413087107.pdfIn PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/winogonabugebatilib.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=frozen+pop+up+game+instructionsPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CF 17492 bytes
SHA-256: be3da71e8dec8b818ff77eced06f2b729651b83b6f827aa56469197c2967e9ef
font_01_sfnt_off00011ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13815 10808 bytes
SHA-256: e3c17d2e5fd28759aef6780de44cbb5eb3d12bbcb4194dcdb439ddbc28ce538b
font_03_sfnt_off000150fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150FE 2360 bytes
SHA-256: da58674c7d9462204acd1c915727ea91611f622a26fac97460f4ad0601e6f521

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