Malicious PDF — malware analysis report

Static analysis result for SHA-256 9027e2afbe4a6539…

MALICIOUS

PDF

83.7 KB Created: 2021-09-02 04:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 9e523aed83a24e5812f6fdb7e2f20663 SHA-1: a809a87739dd92046e25a05ebb257e65df80d6b5 SHA-256: 9027e2afbe4a65392ce804d5596636c7c52858d8f25e4c4433ffde6eb4653075
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://inwebjor.ru/uplcv?utm_term=2014+charger+srt8+for+sale PDF link annotation
    • https://fceresources.com/ckfinder/userfiles/files/tuzufijelagobabij.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/04epgd32jrl94d8hk2cfnecs79/xozol.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e1c02bf9e---nopoxudulivusuwilij.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/24097684513.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/pizazafenulefalawev.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/f2614217f6913cdf1ee31d1d6e001a90/99224091560.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/b6a5a71f6b5692dbbf2a15d7ab528481/43332538145.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/0f2d179a0d54c9b15ac3cf4e3949dce0/lalikimivezade.pdfIn PDF document text
    • http://newabel.com/ckfinder/userfiles/files/junilerezim.pdfIn PDF document text
    • http://farmina.ru/uploads/files/72967226711.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/64a89b4c1cdbfc59185424979d08fef6/65537784193.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/65057192196.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/fafinemowav.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16083cd0c5d475---9936843276.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d05d855ae42---vajufibawi.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a87108d2720---xikuzasexuwukosikoxupir.pdfIn PDF document text
    • http://bundoreh.com/fckeditor/files/file/wodovexoziwoji.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/gawajapodowifesafuretane.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/54060491874.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/bufadavumuxemuman.pdfIn PDF document text
    • https://noithathoaphat11.com/upload/files/42290259477.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/bdbdfd88a0b4ecece45fd189ee0e5c8b/62953145727.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20210819_043630.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/s2i9a5jttdg3qdudf5qd9112m3/7007484345.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083bc84d285d---29144811374.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/eb142bfa02b2bebef9dd975bba30a79e/fajuwigemowepikililopog.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210614023816.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_off0000e3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C6 10904 bytes
SHA-256: 84deab8b75fcde68f9a5349f7f12c73e7bd514453365ac747702a41affda93e4
font_01_sfnt_off0000fd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4F 16908 bytes
SHA-256: 44a8d37585334dd0ff82678e593c2f16f172819fa74195128a922496be2a0187
font_02_sfnt_off000128e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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