Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e6527a060d273b…

MALICIOUS

PDF

86.0 KB Created: 2021-07-03 15:04:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 382d199962efcff1d5518372a8ef8b4f SHA-1: e5adc80278a1b39b74602ce823c89ef3ac09d9c2 SHA-256: 00e6527a060d273bdbdfadc7b5690f92c843188925900745c44510212ece712c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, containing numerous URLs pointing to other PDF files hosted on various domains, many of which appear to be compromised WordPress installations. This pattern suggests an attempt to distribute phishing content or further malware stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/jt7gpi0mmt31unn1nuapqk4v37/47073699777.pdf
    • http://tcurryproperties.com/konadnew/userfiles/file/ninujopetexoraz.pdf
    • https://istanbulbalbir.com/upload/ckfinder/files/zegududud.pdf
    • http://mobilesamara.com/img/files/file/48272011299.pdf
    • http://itineraire-consulting.com/ckfinder/userfiles/files/91939544258.pdf
    • http://dzbnf.com/upload/file///werovufusilejuzenegugo.pdf
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/9edee48af392b29f237414eddfdd0967/38264713558.pdf
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d916216c102---dosifewexaso.pdf
    • http://krevue.cz/UserFiles/File/87746604601.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d79a70197---85236570197.pdf
    • http://airelimpio.mx/img/editor/file/66943710623.pdf
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cf8c717d1---79103295640.pdf
    • http://bud-drog.pl/userfiles/file/38346476590.pdf
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a8395b080cd---63221426932.pdf
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/bcitoff7sbonei4jc4rnpfuvct/kodelipulu.pdf
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2f13953ca---44977316754.pdf
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/9rir0pjqej7ad2lhl6b55mn6l1/bexosasiwixolubuxulak.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/5fc4b8bde21a11c878a92ed1e7aa51d2/xodise.pdf
    • http://project-lovcen.me/userfiles/file/dezevug.pdf
    • http://collegium-connect.nl/ckupload/files/xikuxinesukaliri.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdcf3cf9fd---xibuxezokezelifinozaj.pdf
    • https://contabil-fiscal.ro/mm/file/gawor.pdf
    • https://sport-jicin.cz/dokumenty/boxobudej.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=city+name+starting+with+x
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee8d.bin
f10d9b90431825f5a20f1ec31116e4dcd9353200d2476aa13976ff5c7763097a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8D 10724 bytes
font_01_sfnt_off0001071b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1071B 16792 bytes
font_02_sfnt_off00011f2d.bin
1684a0ee69676be455e28ec7400510036ca09fe422c666ddf7dbb7c1fdd229ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2D 16892 bytes