Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb22cd296031815b…

MALICIOUS

PDF

93.5 KB Created: 2021-09-02 08:34:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 24fdc073ab43deeb674cc0a920926c76 SHA-1: 96193c5bcd7bd4c8beeb8494cbf56db8cd20dc9a SHA-256: eb22cd296031815b7b21a82e6610d223ba853f59652c437b44218671b739847b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to compromised WordPress upload directories, indicating a phishing lure. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the document's purpose is to trick users into updating payment details. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/3arq3gelockp9naeekr9rvndl2/78865849633.pdf In PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/wojuxijul.pdfIn PDF document text
    • https://bfull.ru/uploads/files/midozagolisegavon.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/49706044672.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/vawazunuzibelubotij.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/07pfpbuk4qra0af8mais9bbms5/29488364521.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/wulunuwifixuwikino.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/a8ec52e646228a7a667b2eb933ba81b1/49816596653.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/86600919206.pdfIn PDF document text
    • https://giverny-bkk.com/upload/files/mobunisunaruj.pdfIn PDF document text
    • http://phsclassof1970.com/clients/875774/File/71004809186.pdfIn PDF document text
    • https://okinawa4d.com/contents//files/pekemojolugabowamo.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/d7c132380a3f24d8961a821de32d3249/magoxirefogibina.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160846e87cbdba---dazojexuxuxosajib.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac65f614b92---fodemupufojobaxuwitan.pdfIn PDF document text
    • http://sun-green.de/ckfinder/userfiles/files/36568162807.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/15687534394.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/c16fb334acaf7459e414d98fd441544b/rurenit.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/pirawipopejoxonopibasanut.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/75866b8e13e320aab42fb89aa2f6bb61/78533713186.pdfIn PDF document text
    • http://angelofthewinds.org/ckfinder/userfiles/files/31325376725.pdfIn PDF document text
    • https://thietbidiensino.vn/media/ftp/file/mafuru.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c69affe151f---5598889577.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=zion+annual+weatherPDF link annotation
    • http://janyska.home.pl/_mjanyska2013/fotki/file/kigibegozaxoxazebowuzaso.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off000108e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000120f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F9 17976 bytes
SHA-256: 16166efbb485da0f281c849cf78870839ce2a355ddcc114c44c150590a2b036a
font_02_sfnt_off00014faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FAF 10188 bytes
SHA-256: bedfb6c264c7ebfd29dc749875d45d1805b513ddf0fd151708e5eafe78f9c31b