Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a00b6d606f4b1a…

MALICIOUS

PDF

92.8 KB Created: 2021-09-04 08:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 7ca7ba919dbca91680c87a0a51751a9d SHA-1: de78d88a38a9682e026a4ce5e24b7845b69d9880 SHA-256: 02a00b6d606f4b1af958edc8d2eac3d5fd730805e47e2ee0cd7e5018c24e470c
126 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 CMS upload storage or disposable hosting, forming a link farm. ClamAV detected this file as a phishing trojan, and the presence of these links suggests an attempt to lure users to malicious sites. The document's structure and the nature of the URLs indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.2073

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
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/0b2f25cd68d98dd3d41bfd33e6d11c05/20970899309.pdf In PDF document text
    • http://contrast.no/ckfinder/userfiles/files/76713979093.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2113a93b14---83530728991.pdfIn PDF document text
    • https://nuttydog.hu/ckfinder/userfiles/files/36747890078.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/87702322990.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706b0cb3085---34918698833.pdfIn PDF document text
    • http://becucci.it/userfiles/files/51115647106.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160894d4f33b92---bikozedut.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d935fecaa584192c494b46146754a471/bozur.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/nizabesapipowatudiwa.pdfIn PDF document text
    • https://cleartunemonitors.com/ckfinder/userfiles/files/98799785258.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/4li4aaangn950joijddfirpld2/fozaxapifem.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/fe017b5a786ade49a259e89fc727634d/73707888404.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b6d827908a3---lavolakuto.pdfIn PDF document text
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16278055192396.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949285c36fd---bugazoxumag.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/7436c88aca2e52590dd2b4167f2b8e9a/77528044609.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/081c696da479a45e9ba59266184f137a/84928286135.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608950bb14ae9---kuzakibagajinawu.pdfIn PDF document text
    • http://thamdinhgiadaiquang.com/img/files/parebovunilikudigis.pdfIn PDF document text
    • https://heider.ru/wp-content/plugins/super-forms/uploads/php/files/3a3c2caf6ae20bb7ae19f1c6a5291b0e/vodijokozunekireluxuju.pdfIn PDF document text
    • http://isagenixmakessense.com/ckfinder/userfiles/files/niwesomezoliguluzukufujat.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2d090d7713---zumamatosigujuxew.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/tevibig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=antigone+sophocles+pdf+francaisPDF link annotation
    • 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_off00010816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10816 10880 bytes
SHA-256: d20efe58b5ba2ed2fba480c90ad10afd3bf675b47ea4ce61b821ab4cc6d8a4c0
font_01_sfnt_off000120f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F2 22840 bytes
SHA-256: f0e7e22e5af251401f1d7db0e1e0a97f9b6c7a3050ce5c2beb00395115e47445
font_02_sfnt_off00015b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B8B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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