Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d601a5964f83cb9…

MALICIOUS

PDF

89.0 KB Created: 2021-08-07 18:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 7d27d2bfe46c27080915342a5c3a6ec3 SHA-1: 2ccc2cfca60f43ae0ca8b8f54f11156014ccfb8c SHA-256: 9d601a5964f83cb9077ff19900cb3c21c463f267a8667ecff549f021c224be0c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress sites, suggesting a phishing or malware distribution attempt. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely provides instructions to decrypt a password-protected archive, a common tactic to bypass gateway security. While no scripts were directly extracted, the presence of external links and the overall structure suggest a malicious intent to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16070f7d056802---jowiremexodop.pdf In PDF document text
    • http://veiligheidsslot.nl/ckfinder/userfiles/files/52311396571.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/13236645949.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/56c7f7e2ee942400c11b8853a5ee69e5/63897619718.pdfIn PDF document text
    • http://konstruktor33.ru/app/webroot/files/files/towirigegalerej.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/bejezojaleweb.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/4s8dtpjlsocbk8qref4lp2gno0/zafoxotokul.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/jumarenevizota.pdfIn PDF document text
    • https://samyenngochoang.com/wp-content/plugins/super-forms/uploads/php/files/i2adh462irpdplpiip2ao18c52/34468103340.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa53d45612f---94095222727.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/60699725574.pdfIn PDF document text
    • http://josephlillianmorrisfamily.com/clients/59960/File/42867821548.pdfIn PDF document text
    • http://www.alfapilates.pl/upload/file/25920611802.pdfIn PDF document text
    • http://form4concrete.ru/pics/cont//file/41542979594.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b56fea51b36---65950287003.pdfIn PDF document text
    • https://littlelightnepal.org/userfiles/file/munojifebudusan.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe257ae39c---7652861028.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ee51cd7ed1c---bidukitadekafafakoxa.pdfIn PDF document text
    • http://leasingtowers.com/ckfinder/userfiles/files/38593981169.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/06f05a8a42a3de8ab353e21e18931093/55909853444.pdfIn PDF document text
    • http://strojsteel.cz/webpagebuilder/ckfinder/userfiles/files/xiludowevipinuwevuwo.pdfIn PDF document text
    • http://uctodane.cz/UserFiles/File/87029837848.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/wedowusepil.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bd8183b9f55---nizobedutevuzakuza.pdfIn PDF document text
    • http://www.w3.orIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=harry+potter+y+la+camara+secreta+pelicula+completa+en+espa%C3%B1ol+latino+youtubePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF0 18600 bytes
SHA-256: b32e201f98b4888dd619356d296fab3fcd8133c73bb6d27213b8f1f8057d3cb7
font_01_sfnt_off00011b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B59 2568 bytes
SHA-256: f2bc6e94f9c90b6e898ba63f74857bebf988de2530115590285d88769179c73c
font_02_sfnt_off0001261e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E35 11084 bytes
SHA-256: 42343f34f36f630138917002b6e62fdcf36f6364bf9c2bee166d9c3ce7a72be1

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