Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80aba74b016dcda…

MALICIOUS

PDF

96.0 KB Created: 2021-09-03 03:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: eab83a0c71bc1f873ea3fac82ed367e2 SHA-1: a409673d28c32601c0b19c8959a0b5411d500c78 SHA-256: f80aba74b016dcda405e6b8dc4e16bdda86446c1799e666c060520aed736cdd1
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed it functions as a link farm, with numerous URLs pointing to compromised CMS upload directories. These links are likely intended to lure users into downloading further malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4630

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.
  • 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
  • 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://abpaluso.com/upload/file/wutefoforifim.pdf In PDF document text
    • http://copy2d.com/ftp/image/file/tebevisigejuwekopa.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160907c4195ddc---80989804698.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097a52514da7---xuvug.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/cafb2873ce950b9166966eb5ffd08201/63539667846.pdfIn PDF document text
    • http://wabasnb.com/files/fckeditor/file/14652190760f7d3c982b2d.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16078f37ec9418---zotobeduperurizuwa.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/20287645ba8875ecd3c676a3a611b04e/86738137958.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210503210509.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c8a81cbd2---99857346229.pdfIn PDF document text
    • http://partnerplus30.ru/images/fornews/files/lifarixobesuzux.pdfIn PDF document text
    • http://starrsgazette.com/admin/images/file/77788177763.pdfIn PDF document text
    • http://abwmercury.com/uploads/files/fisobasuzebadopazipol.pdfIn PDF document text
    • http://impressivetravelvietnam.com/upload/files/ligetizasijojujowikewuke.pdfIn PDF document text
    • http://tongchangkj.com/uploadfile/file///2021082514533620.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/b2b42f70052d13e0ebea1e295f32bb2c/88087649025.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/ippon8i7ntc76o0it2cpjh5g75/zokimofurakifu.pdfIn PDF document text
    • https://e-uchebnici.com/img/file/44319133203.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784cc21231d---31391274519.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3af15888694c034afe1d52cfa3ecad54/vudovalanovulitevaz.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/cfe2425e5e2ca9830f6d31ef025b2b3c/13350363886.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202105/file/1621984443.pdfIn PDF document text
    • https://goldmenu.com/userfiles/file/tosupobobubepulel.pdfIn PDF document text
    • http://mjsolankifoundation.com/fck/imagesfile/pafelibanegorowitosevox.pdfIn PDF document text
    • https://teyadegitimvideo.com/calisma2/files/uploads/77273059841.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=what+is+metaethics+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A73 18516 bytes
SHA-256: 3d634d18f1d985fb6e5b6f0df239977f90f00b441005f561360a897db4c35642
font_01_sfnt_off000169e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1