Malicious PDF — malware analysis report

Static analysis result for SHA-256 eedee22a20141d61…

MALICIOUS

PDF

68.1 KB Created: 2021-09-27 09:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 4131e65935c8db32a76cb67bdb88442e SHA-1: f3fed2c15ce890982412a0071154268491aeb410 SHA-256: eedee22a20141d613cfec981e94781f9077364a56569e25af67dde6701c54c84
176 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an image-based overlay and numerous links pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content or download further malware. The document's structure and link farm indicate a deliberate effort to obscure the final destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 68 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.
  • 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 https://alansglobalservices.com/ckfinder/userfiles/files/52849497836.pdf In PDF document text
    • https://adikmanis.com/contents/files/60667622617.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/06c7328467b728b74e270a67bef23a7b/vuxojalesufag.pdfIn PDF document text
    • https://derya.afmiletisimajansi.info/resimler/files/bedefetufoxidaredaguz.pdfIn PDF document text
    • http://restokrat.info/userfiles/file/logugizozibib.pdfIn PDF document text
    • http://garmaclima.com/uploads/ckfinder/files/1713175786.pdfIn PDF document text
    • http://nzozkrowodrza.pl/uploads/editor/file/dejonipu.pdfIn PDF document text
    • https://brawlcall.jordanadams.com/ckfinder/userfiles/files/duxesadijetozos.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/91496660329.pdfIn PDF document text
    • https://pinkrali.com/calisma2/files/uploads/55768016970.pdfIn PDF document text
    • http://fteq.ru/files/file/36094327868.pdfIn PDF document text
    • https://gad-elhak.com/userfiles/file/86527034743.pdfIn PDF document text
    • http://osingenieria.com/images/admin/file/tadovogumudefepusovajel.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/kulemifos.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/36204384820.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/98462754437.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f5d9797e3d---28192123410.pdfIn PDF document text
    • http://quimicahj.com/admin/userfiles/userfiles/file/valirubinoxujugubabenuga.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16131a4e855c42---zitidubov.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/7fkj9dmkg3bqfinum39p53j8fk/86852420267.pdfIn PDF document text
    • http://sportgalaktik.sk/userfiles/file/xezovaremo.pdfIn PDF document text
    • http://prosquash.by/data/48302816771.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/binoladunuwi.pdfIn PDF document text
    • https://bjjewels.net/nbloom/fckuploads/file/51871249902.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/9887019199.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=simply+prepaid+planPDF 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_off0000afef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFEF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC801 14288 bytes
SHA-256: d43cc04aee9d6c2a94638113a85aa6367ed7dc6c91a10ec84e08fef392c70982
font_02_sfnt_off0000ebf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF0 10356 bytes
SHA-256: d26306dfadfcbdb8d5aea4737bd81284a7700f9f35d51b6d751b0647a917c7bb

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