Malicious PDF — malware analysis report

Static analysis result for SHA-256 33065f6fe8286b4a…

MALICIOUS

PDF

92.0 KB Created: 2021-08-04 08:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 933c652d6a80f210af1f515b2eb61819 SHA-1: 7877dc30d214e37f5a7db68d96becfde5916a842 SHA-256: 33065f6fe8286b4a099f5b020d13476f2c0e7e33e8c0852b1b9414c5572a05da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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
  • 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://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/253b2b1df787979b0377c4a64808ed5a/wikovi.pdf In PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/55b368ec7d6fb15b7a9f763de55b595f/nadajaxolemevu.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0de35d3e5---7012815938.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/21318827530.pdfIn PDF document text
    • http://cambridgekapurthala.com/damana/userfiles/file/vufituje.pdfIn PDF document text
    • http://poorclarescork.ie/images/42668536055.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/30jgfb6kpv933r8enr3t3ktfk3/17319542991.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a365e233147---lulejon.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/61a76e301fa7367cbaab6aa7e87a6bd2/lomovomi.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/678b284261e52ae72a8c35d20c2a5805/70187959541.pdfIn PDF document text
    • http://angerdress.store/ckfinder/userfiles/files/fomisaginixamole.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/76lcg6m284k9ae11cvb6absoq3/somulunogosubinitov.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/98130823881.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/7vgv5eeftmsc222op6i1ofvhb0/wizipiruwekanejazifimug.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/t6torbrgj30lu8mkgmcbbmh1ts/67760483034.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/wigekuse.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/hf1hm1slj39c4k9e4h4ee0ko24/ragopuf.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/1h7q5jkh02kupm41a51i1pvmmi/tazijikemekewevevajeriw.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/tudimipezolaverar.pdfIn PDF document text
    • http://tbvshungviet.com/upload/files/zixigesuxagimadopivapip.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/6387f005f7e6f3828356284995c1cf14/20194324428.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/sodipoduvewu.pdfIn PDF document text
    • http://eg-connect.com/uploads/editorfiles/file///38588455640.pdfIn PDF document text
    • http://sheeld.org/clients/d/d0/d021426cee8527c21a172be12ef3d645/File/97092360161.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/be3c268c6fb2972412f8fed87ccaba00/15491490198.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/p2s5p4jscaua4o9h8ro1io6tf6/doxudisunepodenilete.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=dominos+number+floridaPDF link annotation
    • 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_off0001027b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A92 10660 bytes
SHA-256: 273fb557a66d98cad9a5138db2400cade5d5e415212e652061743e03d67db3df
font_02_sfnt_off000132e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132E0 17884 bytes
SHA-256: b79f4b59da9ca9d0ac691de6510084e7f343c88c0842c9d79a64df632fc3753c

Open this report in the interactive analyzer, or submit your own file for analysis.