Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2542cf606bbe5ce…

MALICIOUS

PDF

66.5 KB Created: 2021-09-20 07:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 28665db2250bd79a35ed76e527e8d6d2 SHA-1: 36a5f450fa1905cd7ea3bd2e8892deaab54e8f9d SHA-256: f2542cf606bbe5ceaa476726c7486a03196843d1ec566c4d19e33a24fd7c328a
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous embedded URLs that form a link farm, many of which point to compromised WordPress sites or disposable hosting. This structure is characteristic of phishing lures or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2639

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://medvor.ru/uplcv?utm_term=bike+mayhem+cheat+codes+list+2020 PDF link annotation
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/ladupowomuxavata.pdfIn PDF document text
    • http://laibros.com/ckeditor/userfiles/files/7251407676.pdfIn PDF document text
    • http://bbmeti.it/userfiles/files/43517621548.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8crgg8kqajohtngtbtt6nlsh26/42894364657.pdfIn PDF document text
    • https://cuatudongsaigon.net/uploads/files/25587601145.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fcc366a67d---sekubenoz.pdfIn PDF document text
    • http://yepuco.com/uploads/files/37121521015.pdfIn PDF document text
    • https://malashealthcare.com/userfiles/files/93867880903.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161473765b621d---32048169818.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/30880775550.pdfIn PDF document text
    • http://poney-club-romilly-aigre28.fr/userfiles/file/luvufuwitisuguwuwiv.pdfIn PDF document text
    • https://futurefacesnyc.com/uploads/file/musibamiseniretij.pdfIn PDF document text
    • https://baust.edu.bd/app/webroot/ckfinder/userfiles/files/woded.pdfIn PDF document text
    • http://zzps.pl/userfiles/file/81581186373.pdfIn PDF document text
    • https://shoppe.everybodyisnotdoingit.org/gift/userfiles/files/90819209171.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe959e5ee6---36528441655.pdfIn PDF document text
    • http://gmart-express.com/demo/uploadpic/file/73725128006.pdfIn PDF document text
    • http://investin-khj.ir/ckfinder/userfiles/files/74592167224.pdfIn PDF document text
    • http://ptichile.cl/userfiles/file/zovewimazikonizozu.pdfIn PDF document text
    • http://downtowncincyhotels.com/core_degree/admin/images/cms_imagesfiles/nuvofipezekujotatimekavi.pdfIn PDF document text
    • https://airin.lv/images/userfiles/file/30688188491.pdfIn PDF document text
    • https://hbfilm.ca/resimler/files/janukomugaxim.pdfIn PDF document text
    • http://infunplastic.com/d/files/luruvu.pdfIn PDF document text
    • http://vo23.ru/upload/file/vatagib.pdfIn PDF document text
    • http://stonepigments.com/userfiles/file/32946380711.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/45686075725.pdfIn PDF document text
    • 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_off0000c11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC11A 10932 bytes
SHA-256: c074d99e76fbdbd2ce967e838c626b28ea04f0b167a48e5998285195a703f08b
font_01_sfnt_off0000da8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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