Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bdbf047732597fe…

MALICIOUS

PDF

84.6 KB Created: 2021-07-08 01:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 3cde38f7f15cc5f1bde5f646d017fc46 SHA-1: 3c4db238434ef14f6d0b08bdfa3bd415734ebaf7 SHA-256: 2bdbf047732597fe50670ad00599010578d5662fe8193781ad15779c29dd58a1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. The ClamAV heuristic identifies this as a phishing trojan, indicating a malicious intent to lure users to potentially harmful content. The presence of a link farm on disposable hosting further supports this malicious activity.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3778

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://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607dddb643ddb---jelosovekusi.pdf In PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/4468063613986434ba657af16b99de4f/31151469595.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/87020bdccc77fdd256048261a7157c58/89325297264.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210506111837.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/pazagefegefanupixidoruro.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/e15f44178b2cb5690c56c2cfd4d2128e/1945222897.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/2714773caddfe1768ab5c650fc1dd961/97843690287.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/99184736145.pdfIn PDF document text
    • https://bimetoor.com/basefile/bimetoorir/files/69397874832.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/3a8098bd6087f9e16d76e31e759a6d5a/337537433.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096721794025---44474966067.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c86e9d04023---57486933540.pdfIn PDF document text
    • https://koffiewarenhuis.nl/app/webroot/files/userfiles/files/37717657853.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff195dafe6---pomazufifulo.pdfIn PDF document text
    • http://daindnc.com/fckeditor/userfiles/file/78602331537.pdfIn PDF document text
    • https://stallion-international.com/userfiles/file/88589689420.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/19840319373.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/33288178575.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/wetokatugid.pdfIn PDF document text
    • https://siam-royal-view.ru/data/files/50614929768.pdfIn PDF document text
    • http://lovesushiscv.com/uploads/files/jusubegizof.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/11350305990.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/evvlb8o9iljoctmt09cok6g336/kosoxatajovibu.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021051120245373499.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=things+to+avoid+with+carpal+tunnel+syndromePDF 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_off00010d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0D 16608 bytes
SHA-256: 454736c1e6db3baa6e51b0e766b9bf58e75bf53c5fa1fe8212f3140a186d4779
font_01_sfnt_off000137ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137ED 11292 bytes
SHA-256: 34f42353bfc4fa60013bf434025e10c99916816b047712e9b03d66fb5c408997

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