Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20a163092655705…

MALICIOUS

PDF

78.0 KB Created: 2021-08-28 21:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b0a51ecfae160b3d9dee09b067039360 SHA-1: 026649a03c6007e2cae283d098643e720b6eb7e9 SHA-256: e20a163092655705eb378d76be2a768ca96a974f08580612ec127ccf396e63b9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous external URLs hosted on potentially compromised CMS uploads, indicating an attempt to redirect users to malicious content. No scripts were extracted, but the presence of numerous external links suggests a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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://makingthegradetexas.com/clients/d/d4/d4716c73f098ea79da165a2194b6736a/File/wowimelu.pdf In PDF document text
    • http://rmgoals.com/userfiles/files/zarirudosilil.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/70805228270.pdfIn PDF document text
    • http://uniquecharacters.com/upload/files/75934310544.pdfIn PDF document text
    • https://hanahana.vn/media/ftp/file/kudoxoxorutaxofokugi.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/c7acd90ed2940e49752e59109045315e/wovipi.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210608144425.pdfIn PDF document text
    • https://kibledergisi.net/resimler/files/90555703178.pdfIn PDF document text
    • http://xn--b1adcbbai1bezln.xn--p1ai/content/File/72123103225.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a0146755c---43186903822.pdfIn PDF document text
    • https://nocnepal.org.np/ckfinder/userfiles/files/fotolaxa.pdfIn PDF document text
    • http://pravkniga.ru/files/userfiles/files/28999612840.pdfIn PDF document text
    • http://salespate.com/userfiles/file/zesokezowizemu.pdfIn PDF document text
    • http://muacuoi.vn/Pictures/files/45057323339.pdfIn PDF document text
    • http://timandlor.com/userfiles/file/44307340179.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/0eb4738c82c65fd6cc16630262c48369/fuvuruditixopuzisijekete.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/412d1e3cb11385386b788b147bbea345/pagibitido.pdfIn PDF document text
    • https://waroproject.com/file/7172970612.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/vlk7ec8p54c157rud5k8v11ov6/vagali.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/23914551393.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/94g8r94qejivchgf62qqqcni75/56025631400.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/bdgo7ae0d0h2g5dogm810acg9c/taxemofo.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f461e5e090---75214042639.pdfIn PDF document text
    • https://konyaalotaksi.com/userfiles/file/gezalepabij.pdfIn PDF document text
    • http://www.neoneophytou.com/ckfinder/userfiles/files/nebebovezagimusix.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/zutulalaruji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=madonna+katy+perryPDF 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_off0000c593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC593 10276 bytes
SHA-256: c462e1600f5702893c12b6dfcbc41f89015f1e380a04e6b81cc621e1573bc691
font_01_sfnt_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 20036 bytes
SHA-256: 3acf4ea4a82cc562453e2a9db3045c1f076d3f60d2f28bae88888154215c0e30
font_02_sfnt_off00011163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11163 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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