Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb45094c62bc1235…

MALICIOUS

PDF

80.0 KB Created: 2021-09-09 10:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5410db9c38b89321b9195572cf5ca4c8 SHA-1: b19127ab19d6ceb4a6fc3fdb1f65766af900fa3a SHA-256: bb45094c62bc12358bcac7698c699e276fe32f9de0c56aad9d8bf581d6069034
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised or disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple external URI heuristics and link farm indicators further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://ketchas.ru/uplcv?utm_term=bacolor+pampanga+zip+code PDF link annotation
    • http://meadescafe.com/userfiles/file/81714314844.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/9d3ddc4921a40761e5c5af992db38cc0/fezeguximamopiguwixibo.pdfIn PDF document text
    • http://www.77ice.com/upload/files/rirasolanadomozekin.pdfIn PDF document text
    • http://fortwashington.abwingsmd.com/uploads/files/vidiwibezibogabad.pdfIn PDF document text
    • https://emailing-online.fr/uploads/userfiles/file/sagegutox.pdfIn PDF document text
    • http://ranch.pl/files/file/kavubixowajig.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16133470f4d6b6---85053394002.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/77229267502.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161339744c6336---petigidove.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/32714798696.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/161371ba1d5d6d---96409419864.pdfIn PDF document text
    • http://pibar.tw/uploads/files/202109011100112630.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/161310b678fb0b---lelekoxezidodiledumedusa.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161326ad1108f2---mujurafigavi.pdfIn PDF document text
    • http://cochemical.com/upload/files/60517533351.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613368327edbf---30226681122.pdfIn PDF document text
    • https://arab-hams.com/Ups/files/14563699818.pdfIn PDF document text
    • https://alsharqcc.com/userfiles/files/51599825986.pdfIn PDF document text
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/9655955132.pdfIn PDF document text
    • https://valgott.com/images/userfiles/file/70973888635.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613969cccb3b5---nefuzojukisajozawajelogup.pdfIn PDF document text
    • https://ezokniga.com/uploads/file/xipiwanidodudulexegojegid.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/16137861a74ed8---ziduvoji.pdfIn PDF document text
    • https://alternativi.brtim.com/uploads/wysiwyg/files/tigumesutodowejusilatuwuv.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_off0000d562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD562 17436 bytes
SHA-256: 078f27c9f2d6a6206a64159ec107a87dd63e6bd622b130cc0ae122d4db0fe3bf
font_01_sfnt_off0001028b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028B 10704 bytes
SHA-256: 4b4cddfff4fcf5fce5559f1706e56dbe81c47fbfba979ebf4f691aa1551c6882
font_02_sfnt_off00011ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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