Malicious PDF — malware analysis report

Static analysis result for SHA-256 5349bff4ef6b0e5e…

MALICIOUS

PDF

95.6 KB Created: 2021-09-15 06:01:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e80116a2001bdda30b033f4942bba7f1 SHA-1: 35662f3c114a12431f6fe3ee34e75d73c0050714 SHA-256: 5349bff4ef6b0e5ea220eeeb67f933361677aa7136104e4ed82d06dd27aebee3
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to various domains, many of which are associated with compromised CMS uploads or disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent. The primary function appears to be directing users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2669

Heuristics 5

  • 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
  • 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://allytemp.ru/uplcv?utm_term=game+of+thrones+free+123movies PDF link annotation
    • https://tcremich.lu/files/files/65459923470.pdfIn PDF document text
    • https://heritran.vn/uploads/news_file/lunasibimuvomofafujit.pdfIn PDF document text
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/damevepurotebamedisases.pdfIn PDF document text
    • https://organicearthfiji.com/documents/file/27326378643.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/36317955da70f6f9b30f739698249c91/jifiminujaxesaxis.pdfIn PDF document text
    • http://sanchariglobal.com/userfiles/file/xikanamakebil.pdfIn PDF document text
    • http://hissekurban.com/resimler/files/zemijigifug.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/44b943f9aba413865f24c1f0ceb9c3a3/turewep.pdfIn PDF document text
    • https://moiatakashta.com/userfiles/file/8242999826.pdfIn PDF document text
    • https://lolakarimova.uz/ckfinder/userfiles/files/xabuvito.pdfIn PDF document text
    • https://www.tahitotfaluovodak.hu/ckfinder/userfiles/files/86673363088.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613ffbb0aa639---vizozarizan.pdfIn PDF document text
    • https://ecotranslation.ca/upload/editor/file/kotitasa.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161415dcf39dd0---tazolegelerokit.pdfIn PDF document text
    • http://krakowska98.com/zdjecia/fck/file/52667680299.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/zafonozeworunitinavakuz.pdfIn PDF document text
    • http://2446665a.ru/ckfinder/userfiles/files/42690311831.pdfIn PDF document text
    • http://ohmamakitchen.com/uploads/files/12747390572.pdfIn PDF document text
    • https://ventadeterrenosurbanos.com/userfiles/file/59115624421.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/naninowubitaw.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/d0ac0f78c5a9696d2cae9d78207affca/wajobovub.pdfIn PDF document text
    • http://www.asiacoservice.com/file/files/27530296012.pdfIn PDF document text
    • http://workontext.ru/media/file/xaladimanediv.pdfIn PDF document text
    • http://www.guus.edu.mn/ckfinder/userfiles/files/16307808051.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E39 10884 bytes
SHA-256: 9950d0e02b2e0622cb6ee1ca4424377f4db9b03f9cb5b092888e7fe5ac383d77
font_01_sfnt_off00013760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13760 19660 bytes
SHA-256: d0e951cd7b39d60d7fbb7adb97594297a0d8b3e03295cb5d86e6b0a74da0c53f
font_02_sfnt_off00016a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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