Malicious PDF — malware analysis report

Static analysis result for SHA-256 570cc0b2e3962452…

MALICIOUS

PDF

81.8 KB Created: 2021-06-29 06:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e96a71fffa51d4978adc014c04109dcd SHA-1: b7961817a44297f6adb3cccc28a85a0cd560fd54 SHA-256: 570cc0b2e39624525f19a55a08ec7b14024d4789bd19c999a41b652c89a0bba6
124 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. The document's structure and embedded links indicate it is designed to lure users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

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 https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/jqohsam7k18skvt5tqrd7qpfi5/dizokeruvojeves.pdf In PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/f1e271a8d58605703861da7a0c699a31/rimabujafagij.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/h17uefdih0i7svf7rkusl8feie/lobemakonuneni.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab3b41c72e---39557889394.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/4ca3a99556a3c3a5d6a2d31094c3d637/49229483496.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/pn0hm6072o21spgv5rm2fqn6p3/nizifixopovesukuguno.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f114473c11---34722331438.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160834eca03ba2---pitasoxekunum.pdfIn PDF document text
    • http://cartonwrappingmachine.com/userfiles/file/mutedivowosalufolotuparu.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160af66d2c0efb---zanenupakukak.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/c3659ece727821c773fc060be23ac94a/72394700921.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/0ac7d5b3548b5621e0633070470df368/xivimukekaviki.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/7765818c3dbb488ad3ca79c208044d50/kofegonilekera.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1609831576f0d7---11806457246.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/c4f684ec00b9319437e349207193a550/44590812663.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c2b541aa6---futewirugekarojipalezum.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/53175071722.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/6a70adbde399f3f8edcb7342faeef8ae/90134773875.pdfIn PDF document text
    • https://peptidturkiye.com/ckfinder/userfiles/files/31404479506.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607df67b145ea---2783161024.pdfIn PDF document text
    • http://www.trafikyaren.com/wp-content/plugins/super-forms/uploads/php/files/g4eakuhp5v2753dl3alnk0lt55/207345121.pdfIn PDF document text
    • https://yenhuy.vn/upload/files/76309050227.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16204818178334.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/28d83b6274f06190bc9dba5369726517/pofexu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=things+to+do+in+sofia+bulgariaPDF 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_off0000fe07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE07 17460 bytes
SHA-256: 652a7b8722622607c5f9a1bc374cefbfae98af71e7b6d6706d70ab98b1826709
font_01_sfnt_off00012bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BCB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1