Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b678cf41aee43c…

MALICIOUS

PDF

84.2 KB Created: 2021-09-19 07:34:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c4b244286e666a05f33dddcd870da260 SHA-1: fc36916713944f192ee355c2a83aa6f3cbf5db5c SHA-256: 22b678cf41aee43c53ee5523cbed8a260358b3331da5a56160ee587f87cf6977
176 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and a raw IP address, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the heuristic firings and URLs point to a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/5b06b074f3ed7f25b0b6987471ea7a94/fubizurepatelesabewo.pdf In PDF document text
    • http://www.depomatrial.com/file/49837024258.pdfIn PDF document text
    • http://77owship.netsociality.com/upload/files/tajitivifalibidofoxukole.pdfIn PDF document text
    • http://shanghaicruiseparty.com/uploads/file/niruguguzegemubuj.pdfIn PDF document text
    • http://obchodsezlatem.cz/upload/files/19131900936.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/luxolitulenosimow.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/81196649500.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/9ff5451cd4ab4ad8fffda8931218bdda/41591791849.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/durulelagidax.pdfIn PDF document text
    • https://manualismedicina.hu/fileok/file/75258500226.pdfIn PDF document text
    • http://happyhanool.com/ckupload/files/27196852978.pdfIn PDF document text
    • https://goodnest.info/tctt/sites/aaa/file/99866867845.pdfIn PDF document text
    • http://178.62.148.222:300/ckeditor/ckfinder/userfiles/files/67409788562.pdfPDF link annotation
    • https://abss.pt/userfiles/file/vimeseximisivijesitumug.pdfIn PDF document text
    • https://geneticapanama.com/userfiles/file/xuxepatimudawomun.pdfIn PDF document text
    • https://tims.ro/ckfinder/userfiles/files/39497225607.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16137d1db7b67c---mokum.pdfIn PDF document text
    • http://sunway.me/ROOT_PATHuploads/file/032035538745.pdfIn PDF document text
    • https://anzhero-sudzhensk.verlauf-ekb.ru/admin/ckfinder/userfiles/files/bugoko.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614064c6b12d1---gotumuzamowotoxapes.pdfIn PDF document text
    • http://ipceurope.com/assets/file/vebijiketorosajezoxusi.pdfIn PDF document text
    • http://showdoimovel.com/files/files/tepedu.pdfIn PDF document text
    • https://chongtham68.com/app/webroot/uploads/files/webefade.pdfIn PDF document text
    • http://bio86.fr/userfiles/fichiers/titigepur.pdfIn PDF document text
    • http://sure2trips.com/bot/ckfinder/uf/files/81991436428.pdfIn PDF document text
    • http://sukhonthip.com/file_media/file_image/file/rifexu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=yu+gi+oh+omega+androidPDF 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_off0000da15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA15 22204 bytes
SHA-256: 7fd0ef49fd176de730c400736802675c967314b5973b7127b7717f3955c8d2fa
font_01_sfnt_off000113c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C7 10468 bytes
SHA-256: 58e7eb3f3b8e94af3823cf0b4b1ded2bfea2010d55455e659541ccdba8604ef5
font_02_sfnt_off00012b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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