Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cc9474f0db5b06…

MALICIOUS

PDF

236.5 KB Created: 2021-07-07 05:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b57769a6b8aef94b08818be06da00a54 SHA-1: a2ec537daf126a4f9e8f6380995332951ed17cda SHA-256: e2cc9474f0db5b06c9e72a7bd47f6596556dbddb10ccd149fd03fc650c4dc732
126 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to compromised WordPress upload directories, suggesting it's part of a phishing campaign to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing lure, likely leading to the download of additional malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 5

  • 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.
  • 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://zulaikhatextile.com/userfiles/files/gisaxusofironekutejil.pdf In PDF document text
    • http://global-leasing-management.com/uf/file/44866086220.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/69679406387.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c515ffd4bba---51079502042.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/xiributaredaxebipu.pdfIn PDF document text
    • http://healthywithhart.com/res/file/1020255333.pdfIn PDF document text
    • https://arerp.kr/data/file///8218498368.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/202155049471918.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/71b51521616dbd85541fb9349f053fcf/64323194569.pdfIn PDF document text
    • https://lexconsulting.ro/webroot/files/media/gipelejaranezanubudu.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/p4p8jt0n5d1h06uajigsahnsr3/23828381239.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/8vmbosubhe01dlc72nrbil88o3/gomenamenimu.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5772dce06---32781764804.pdfIn PDF document text
    • http://stattus.com/assets/file/sunabitumibedinaw.pdfIn PDF document text
    • http://maihome.hu/admin1/file/sedurulajanebigunededoju.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/v3ncn8u4c924cfq3rusg2mu54r/delarud.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/df49d986369bcbdab921aadca6636c20/33215295058.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/4cdd19ea9d01f2eb436a330810f7ddf3/wovabujazepejuxikelus.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/b5ee25c370193c4a28bba130e9ee46f4/kenovajalalofobepivezad.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8947b69c8---zadekudiluzinemivuzo.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1b10e3394---94698862436.pdfIn PDF document text
    • http://waterreducer.cn/d/files/53240626479.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/kerawafasun.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=jagged+alliance+2+imp+guidePDF 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_off000342cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342CF 18448 bytes
SHA-256: 2abb06fc9fbf63b10c8a74b1af18a219f5ff74ee3821d49b1d971b72fd8dfccd
font_01_sfnt_off0003740c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3740C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00038c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38C23 10580 bytes
SHA-256: 17e88df9b4432da481bf36465f1823f6fdba00b26a0d5d5e71851cec64f033ad