Malicious PDF — malware analysis report

Static analysis result for SHA-256 3574f5be5e4c892c…

MALICIOUS

PDF

84.6 KB Created: 2021-06-29 00:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 52a018780097a0b5ce0db62298279e75 SHA-1: fa3c7a213ff840d07e16889c8dec6c1f2df2b46a SHA-256: 3574f5be5e4c892c1d18483bedd42bd9b64f557a932abadf6f6e28c3ef74c3d7
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The sample is a PDF document that employs an advance-fee scam lure, presenting itself as a lottery or prize notification requiring parcel delivery details. It contains numerous links to external sites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=what+are+the+five+duties+of+a+citizen
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160717c5914ca0---jizefifope.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3817a0b874---lagovatu.pdf
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f37d8d348---42646367001.pdf
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/dfmg2jp24kpiiqe19ohnpjbgmu/98130229586.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c7413a064e9---virogomisojinelepapelovuj.pdf
    • https://qpshouse.com/upload/image/file/vedomovi.pdf
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/0injr5lchi4r2envd4p425b0eu/14686451120.pdf
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/6bc172129823bfa693d220735a557514/96651801357.pdf
    • http://vds-construct.pl/userfiles/file/62444371679.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/239c2a9ab4d6f970429fcac9e133cd02/54916561489.pdf
    • https://gruntbudowa.pl/files/file/zagodetewajol.pdf
    • https://trimix.bg/UserFiles/File/19200888793.pdf
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2b929a0f2---mivolov.pdf
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/09da310bee3ec43f448fcfeabd021356/pefavupus.pdf
    • http://bualuang101.com/backoffice/upload/files/65653142440.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/9bf1c88960c2a617a2d97b09f3e57654/kigitifotelejaxusuzizus.pdf
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609477d9016df---63551807376.pdf
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607da7048b66a---malebebovalupimezomunabaw.pdf
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/ce927e345575a0cc7702df491f3f773e/nipukiko.pdf
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160c75861a2c76---sepaxakosi.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ec93b8935---91132980995.pdf
    • http://donateagift.eu/userfiles/file/63319243688.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e710.bin
e8f52c5a94cdecb31b089ee6023eded593ab1cc1b3391a9523fdd61ba043adf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 17212 bytes
font_01_sfnt_off00011416.bin
f02b33f998429307a7906abaa8425f9163a14b982390efd60c5dc0fbda2680d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11416 10748 bytes
font_02_sfnt_off00012cdf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDF 16792 bytes

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