Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0a7d5b80c55895…

MALICIOUS

PDF

85.0 KB Created: 2021-07-22 16:36:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 7ed80960dcbda0051cdfb61dcbc2867f SHA-1: 4cafcc8ff0e3b628b8e80e94cbff6cfc58c4b5ae SHA-256: fe0a7d5b80c558958f1d187cb1f3ad310a7a1ac77100a7c0b672a19c1bc2e49d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML and ClamAV as malicious, with heuristics indicating it functions as a link farm pointing to compromised CMS uploads. The embedded URLs, such as http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/bogbshct0ucgaon3rs8k341e47/babokomomisep.pdf, are likely used to redirect users to malicious sites. No scripts were extracted, but the PDF structure and URL patterns suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160b28b8fca43e---26154196245.pdf In PDF document text
    • https://hbfilm.ca/resimler/files/gaderelixovozofogizifi.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c3130543d22---gapedifaxaf.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607a801b8234e---78743693646.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/rrpt16do5g8lr70f7ttqh3n4q0/giduza.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/devopojalumukazukibozelu.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/bogbshct0ucgaon3rs8k341e47/babokomomisep.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/23721143023.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/35c3b491ffb16a1c2269d4f9c689e6a5/rofewijenitifexen.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8752d9c08b---misalutijefo.pdfIn PDF document text
    • http://thedreams.cz/files/wesukedeborazabinulatem.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/14978895325.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/66610828949.pdfIn PDF document text
    • http://brooklinehs1964.com/clients/6/6a/6a3559cec3eb17f551da2d864c8c85ab/File/18657145546.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/8d745d4ccf459e187481d3699625c94e/30875651141.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/d37b52cf59541147f1410e7e64f44bec/93991474606.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/1249179528.pdfIn PDF document text
    • http://khochailo.com/upload/ck/files/59725184240.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/18766837979.pdfIn PDF document text
    • https://telenovella-bg.com/files/10761229854.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/d14ec20c380306cb1182ac1b2a88b318/lagunomosojitotovibex.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608000aaecc04---zobav.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f4a37531a---60128905633.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=eating+an+apple+before+a+mealPDF 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_off0000ea83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA83 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001029a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029A 10656 bytes
SHA-256: d479d695b4a32253694ad81fc1e52d559f32e871dd56de59316b589c2c243c40
font_02_sfnt_off00011ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB4 17140 bytes
SHA-256: d066f153aa59ceff4d9febd06ddedb7a180f592d3d10a3b618929fc8dad48cf6

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