Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccadc6d0b8e029f…

MALICIOUS

PDF

79.5 KB Created: 2021-09-08 11:34:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e999eaee656bc1ab302ef0f601bea52c SHA-1: 99611de6199fa46ac72d21832471786c0037e9af SHA-256: 6ccadc6d0b8e029f711e6b46e11ee0173bd3c60352ca032eec70b5f6e0f55157
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. These links likely serve as a lure to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/1i1mgrfurf819q2vs7fpm6ccs5/wefasapuwokejutup.pdf In PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160a65faa2e2c9---tototarezopefeso.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b97f038ad12---xidekotulakinotumiwejeje.pdfIn PDF document text
    • http://pm-property.pl/userfiles/file/juxaxuvovejep.pdfIn PDF document text
    • http://synphabase.ch/upload/file/63500495753.pdfIn PDF document text
    • http://trungtinjsc.vn/upload/FCK/file/51038647423.pdfIn PDF document text
    • http://formpart.com/upload/ckfinder/files/zovowomedevoxitawuwadubol.pdfIn PDF document text
    • http://gelateriacool.it/userfiles/files/28338381717.pdfIn PDF document text
    • http://gddfboiler.com/uploads/files/68732424087.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/162e9177fbac22034ed8ed190c92573d/vuganusod.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/drg9erarudg1vlg8o9s0d0u2a2/giweratubamejopuwu.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/55951283188.pdfIn PDF document text
    • https://woodfur.in/userfiles/file/nagotewabejugijekufe.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/2eb9608ed1d3145df0b00aaffad29498/5143564285.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/57676c4c2a9d6529ed4047f99f782075/xopewewewobi.pdfIn PDF document text
    • https://shrisaiexport.com/lightspeedweb1/file/guzemuxivapi.pdfIn PDF document text
    • https://atrax.eu/userfiles/file/turijozikiliwig.pdfIn PDF document text
    • https://hanahana.vn/media/ftp/file/36297607275.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f251f94336d---15093932867.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/1koh3kvona045ohj3cosafopgg/lonuxasugirujemexipikisib.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/057cec7c21c2308e603a8c335d86d5ac/xobavirufozolu.pdfIn PDF document text
    • https://rm-parketi.si/uploads/56308468556.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/653565c8f70b92ac47a58184914cd142/jakokofo.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c498e69ea85---73552636539.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=suzuki+katana+50+manual+de+tallerPDF 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_off0000d182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD182 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE999 10704 bytes
SHA-256: b5737531fa409c7306cd02dd431d3de9e2050306331b7d783191c9123329d14e
font_02_sfnt_off0001023d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023D 18212 bytes
SHA-256: ee50162f233fafe96c168bb66267a5dbfe4b2ae74f0d1b1f1b616efad0d05ab7

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