Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ea5c0cd6eb9960…

MALICIOUS

PDF

88.8 KB Created: 2021-08-05 07:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2f7531bd941d80aa7e4e5e7eade02c17 SHA-1: fff5f67919911ae29fb699105677c857f15cbdf3 SHA-256: f6ea5c0cd6eb99601fa2deb9b8e5b4695e14aeceac558ca79a316039b3a7920b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, indicating it's a Pdf.Phishing.Trojan. The numerous external URIs and link farm heuristics suggest the document is designed to redirect users to compromised websites or download malicious content. The presence of embedded URLs and the 'SE_DOWNLOAD_BUTTON' heuristic further support a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cructi.ru/uplcv?utm_term=dragon+ball+z+shin+budokai+6+psp+iso+free+download PDF link annotation
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/ckj67bkpho7ro6ikggul6g5p45/pojawi.pdfIn PDF document text
    • http://indianaquesters.org/clients/9/95/9573c8d6e108c9729a37356986dd5b5e/File/95034839310.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160979337cf3e4---80805664798.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/3ff7881653ef1343384b554a112262fc/nixelo.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085274037276---32828093139.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/20602092961.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fead488f8e---pavikedofofukuxufi.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a65f45bc376---36653408547.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/1hqdbqr2rt5ta2up6ske5djk6u/seveboseratufaza.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084316b79390---kagumimibu.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb6fd85ffb---zegorafukinufulatonidejuj.pdfIn PDF document text
    • http://ohdiabo.net/images/ckeditor/files/jizonurawaru.pdfIn PDF document text
    • http://congtydaihai.com/upload/files/josemogoderuxi.pdfIn PDF document text
    • https://rozgarnetwork.com/ckfinder/userfiles/files/mosijadawokonar.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/246eb6813121548992d245e9d89cc984/93030484150.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609c94ce3fe29---dimufi.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/4maqdc1hrj1dqepr134j3gisah/11894885630.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075294fc8da1---zaxulazolunisasalise.pdfIn PDF document text
    • http://peaktoppet.com/ck_imgs/files/29796810695.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/efsq5sabcsem6egmtquliu1pso/81136114588.pdfIn PDF document text
    • https://gmt-tw.com/app/webroot/userfiles/files/9060427729.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/4d687cd868f12caf4a597495d16cce40/50524240331.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/45643217306.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/xarakizowedilamar.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/vetogag.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160e7efa60e81c---begatagakeza.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_off0000e8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000100f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F2 11328 bytes
SHA-256: c82e7bd20f5ef04e8b46380d876e02549e35c4c518c2c19f9a007afc2d556633
font_02_sfnt_off00011b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B28 23408 bytes
SHA-256: 79b829efffbb37182f7b4ffbd4e6297a6b263dc136287ee8aaaa4def516c24a0

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