Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2656db7b50f280…

MALICIOUS

PDF

78.0 KB Created: 2021-08-04 06:30:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4dbd9dd6a202ade1314376b9b6f2a17f SHA-1: 2c6a387f5376cd30f26de5156dbee9e5002c0943 SHA-256: 9a2656db7b50f280785e092ca047e9e94fe0b418108806ee465bc0d3828b03c4
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classification and ClamAV detection. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded JavaScript, though not directly executable in this PDF context, indicates a potential for malicious scripting if the file were to be converted or if the PDF itself exploits a vulnerability to execute scripts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8512

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://jdrum-music.com/uploads/ckfiles/files/98821440871.pdf In PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/9330601914c1386ca15260cbf44fa1f0/20457591474.pdfIn PDF document text
    • https://bustotoronto.com/userfiles/file/9028383640.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160afd85d4394b---podaviloxemekeriwazimuwu.pdfIn PDF document text
    • https://egca.fr/userfiles/file/2411171716.pdfIn PDF document text
    • http://sciattella.net/images/file/punutegunudogexusinebemej.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/692ca0dc811d0ce3c0454223414d2cab/53474011910.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebc5b271bd---vimomapogak.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/982eab25130b0042dc27f3f3af27d70c/welanizomufol.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/38053093112.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/81cbf0c315da277f9afe9c7ed7ef5f95/15376444821.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607479ab306de---65419399596.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/60bac0e18e666fadd419419eba221bc8/roxinowoti.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff2b27cd53---76538318766.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/14814850167.pdfPDF link annotation
    • http://novussiteyonetimi.com/uploads/file/bebixipi.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/b2rbgq8hv0kefcgsf24or0p05j/labitemesusos.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a765e498c0e---61204756659.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609889cea8d8b---jupinagikudiwamo.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/7abs0m7j5gst6fcubo5vjka7p6/bowobixupawaxufelaxavod.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/67hqmn5v8a57jcj889fv8493ae/93534453074.pdfIn PDF document text
    • https://samuelben-horin.com/userfiles/file/42455231678.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd56b0ce757---37441284646.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/9581822429.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=volo%27s+guide+to+monsters+5e+pdf+freePDF 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_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E66 10916 bytes
SHA-256: 80ce6bb3208deb6f84dd80765af2a2b39afcaf5145c6665c576c37c57373a3fa

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