Malicious PDF — malware analysis report

Static analysis result for SHA-256 06feba5315928adc…

MALICIOUS

PDF

69.2 KB Created: 2021-09-17 04:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 520d8f03b603d359eedbe96c22b2ab2f SHA-1: 19a6fc3b4022dac1c6cf7a925394a3b0a418fe33 SHA-256: 06feba5315928adc64c22ec3b362752cc1cb35eb0d855274d0cc5fc727db7f50
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, using an image-based design to obscure clickable links. Multiple heuristics indicate it's a link farm hosted on potentially compromised or disposable domains, aiming to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to facilitate the download of a second-stage payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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 69 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 http://greenmodels.ru/uploads/files/18593896995.pdf In PDF document text
    • http://ahkjt.com/upfile/file/jijamufelutogeto.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/02697f91b1fd5a3f07b6ca9befc64fc6/80175810030.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/071814461404.pdfIn PDF document text
    • http://thesecurityguardunion.ca/userfiles/files/lalojewuwobobet.pdfIn PDF document text
    • https://nguyenvanhuongloc.vn/app/webroot/files/images/pages/files/85065617940.pdfIn PDF document text
    • http://hightopeducation.com/cms_uploaded/file/kotopotatuxuwimugera.pdfIn PDF document text
    • http://e-district.org/userfiles/file/kevevosowimozaga.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142406283166---kudinavekotararoxoliretoz.pdfIn PDF document text
    • https://drddvichitra.com/userfiles/file/63312312345.pdfIn PDF document text
    • http://chinasoftcore.com/userfiles/file///penolid.pdfIn PDF document text
    • http://pactolous.hu/upload/file/55761759170.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b20ed720b3---12985678437.pdfIn PDF document text
    • http://fireprovietnam.net/luutru/files/2826856867.pdfIn PDF document text
    • https://teater77.nl/userfiles/file/xejutuforejobut.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e1401dcb50---33505989359.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/b967decd59786b22d6be82b87c92a49f/21289051144.pdfIn PDF document text
    • http://xn--hazrdner-r4a10d.com/alisveris/yollanan_resimler/file/dozowo.pdfIn PDF document text
    • https://cissud.eu/uploads/ck_editor/files/kubodasase.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161413c83e7d7f---58444916753.pdfIn PDF document text
    • http://shopabrang.com/images/files/zevufejadodugafipu.pdfIn PDF document text
    • http://uptindia.com/newsimages/file///lupimipijojujilatesuz.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb14cba99d---fuwopixigujo.pdfIn PDF document text
    • https://kopari.hu/files/file/20226863420.pdfIn PDF document text
    • http://nhactheducthammy.com/upload/files/6007492823.pdfIn PDF document text
    • https://hk-delight.com/UploadFiles/file/6149603687.pdfIn PDF document text
    • http://belovosushi.ru/files/povavu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=among+us+free+freePDF 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_off0000b604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB604 13696 bytes
SHA-256: 0053fc88516b7a2b0b957974e17f0c37fab548bcc27389715063b6ea70fc02b4
font_01_sfnt_off0000d7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AB 10240 bytes
SHA-256: ba471490efb294ebe262d51f3bfaba76dfc83022b91838fc3014485738d34ace
font_02_sfnt_off0000eeb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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