Malicious PDF — malware analysis report

Static analysis result for SHA-256 93972305520d43bc…

MALICIOUS

PDF

66.5 KB Created: 2021-06-05 22:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b6e7417d3d8118871cb7606569b8b67b SHA-1: ed2716cc5ca0d2b82b7c77414543c05e4ca64e28 SHA-256: 93972305520d43bc51eb4f245f69538da01c5ab4769d4e6e5f6fd006dbc84a81
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan distribution attempt. It contains numerous links to compromised WordPress upload directories and disposable hosting sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to religious text searches, likely to trick users into clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

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://garglob.ru/uplcv?utm_term=cuantas+veces+se+menciona+el+nombre+de+jesus+en+la+biblia PDF link annotation
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160745da66b637---disutuj.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/stdnihqq2gdc0pabks6l6f4pj9/9452695009.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/bijisivakagudixakozu.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/ff413c7f1da34a370c767749f03ef65f/juforij.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/e37374af58f12a17ea68f9a30fe1f663/fibibijoviserur.pdfIn PDF document text
    • http://learningkey.org/userfiles/vujokurexob.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/kb1ee2ftc9cr6gf4umn6ce4kr4/42549684641.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf43d2d0c0---16328876061.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ed97d1dae---6103339587.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/809d0c882bff8860bd12e2bc36db7508/23585603204.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/727c5dc314724aaeb17f3033532af6c3/wumonuguzedinowi.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084cb7bda613---vezisasidovegiw.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/4mckmog3tmhok7h5p3ekcpvlbs/31472575721.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160928367dd5da---losiline.pdfIn PDF document text
    • http://anhopphat.com/uploads/files/26809723178.pdfIn PDF document text
    • http://teplospectr.ru/images/files/65154018151.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb9d375e22---xonafumazotok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD843 5264 bytes
SHA-256: 5239fe306ab6f313776052d727ec84b68a3cbfb530454c3b74ec3f1fd6775756
font_01_sfnt_off0000ea13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA13 12736 bytes
SHA-256: ea6c89f171a4b140a738379d8a6309ac30b3eb6d6a305544fd83b79cfb10de9f

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