Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6b00b0256469e8…

MALICIOUS

PDF

76.8 KB Created: 2021-09-13 05:25:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: bca9e1ef9dce4ba67a27612ccac3668e SHA-1: 2570c6645bb0ef439df1c9045a244a6d3c9b5b09 SHA-256: fa6b00b0256469e81834eec6fc24e34dbfeaec82839159047402d236eb3e0e47
164 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised websites and disposable hosting, suggesting an attempt to host malicious content or redirect users to phishing sites. The presence of a 'download button' heuristic further supports a social engineering attack aimed at tricking the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://garglob.ru/uplcv?utm_term=laal+lihaaf+web+series+online+watch PDF link annotation
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16139e785adeed---10166201865.pdfIn PDF document text
    • https://argentinaproduct.com/ckfinder/userfiles/files/saxelosapukinapitib.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/39e92b1bdf059ba9a64ccbf4a9aaff12/nomigunu.pdfIn PDF document text
    • http://hotelbellevuepalermo.com/userfiles/files/60021132274.pdfIn PDF document text
    • http://ternovykh.ru/content/file/didijemelebofurixeguwe.pdfIn PDF document text
    • http://elsped.hu/files/file/sirekeralexiwadi.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1f53da786---tovajemizobinisag.pdfIn PDF document text
    • http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/jajoranosubiwevapesozitib.pdfIn PDF document text
    • https://prcomponents.com/ckfinder/userfiles/files/gotiwixevedetov.pdfIn PDF document text
    • https://basundharamart.com/userfiles/file/sikefabunudurefojuxoga.pdfIn PDF document text
    • http://studiofagiani.eu/userfiles/files/71194297654.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/11088102437.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/tutumitovegipeteze.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16132d065a394e---91043786276.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/32761569523.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/61074671525.pdfIn PDF document text
    • http://yanartekstil.com/firma/files/rofitapajigipazujuw.pdfIn PDF document text
    • http://kondicionery-domodedovo.ru/upload_picture/file/nijijipedodanevafaxese.pdfIn PDF document text
    • http://evrofurnitura.by/elax-furnitura.ru/uploads/files/mejeko.pdfIn PDF document text
    • http://studiotecnicoforace.eu/userfiles/files/35722288483.pdfIn PDF document text
    • http://muntepa.com/userfiles/files/810583036.pdfIn PDF document text
    • http://hujiangsy.com/upload/files/xesoforegoji.pdfIn PDF document text
    • http://montex.pro/uploads/userfiles/file/45257834047.pdfIn PDF document text
    • http://lactopad.com/uploads/files/8575108771.pdfIn PDF document text
    • http://kbchina.de/upload/geremaxorepumijawaxape.pdfIn PDF document text
    • http://premiercontainerlines.com/media/ftp/file/43663181475.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_off0000c8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D4 10616 bytes
SHA-256: 18625cddb40a7fd8574e0f0cf989fa59cd39ce6400e78744f008698881479722
font_01_sfnt_off0000e119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE119 17248 bytes
SHA-256: 1a8a76df7b6c27ab7e1e59233039842a3ef255610014260821fef7c32ce01019
font_02_sfnt_off00010d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D83 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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