Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee65a16207ad223…

MALICIOUS

PDF

89.7 KB Created: 2021-08-04 12:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 32c7669c7d6ee95c43a98f30604ce2ba SHA-1: f9abe461b9793ce3cf3dfc24c4a714cd913f96af SHA-256: 2ee65a16207ad223c018017bdc0c4f958b713d4077331aa90e8fd968b07a662b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS uploads, suggesting it's used to distribute or host malicious content. Although no scripts were explicitly extracted, the PDF format and the nature of the URLs suggest potential for JavaScript execution or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • 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.
  • 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://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af745ba2f3e---65673709767.pdf In PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160820bafa2cff---rerevusupu.pdfIn PDF document text
    • http://nail-free.com/ckfinder/userfiles/files/bifenidijulisu.pdfIn PDF document text
    • https://edusfera.pl/upload/file/52801017718.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/588a08d4cc43a5991feb683967001cc4/puvexokupibiv.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3488e6f6bd---gejulovagepora.pdfIn PDF document text
    • https://lecachet.fr/docs/files/dodejigiwufuvafaketir.pdfIn PDF document text
    • http://dongamold.com/fckeditor/upload_files/file/pibododi.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/lilasaxutajabuwidukimar.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/75081174292.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/f2ee74d9fccc52f4e50ca3b2a8ed83fe/79680420977.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/jawawakodavik.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4691dc9af0---bubidavo.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bccf992842feb1cfac0e6e84db3bc43a/56608265536.pdfIn PDF document text
    • http://logisticsnetworks.net/ckfinder/userfiles/files/59637877790.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/gigolapefivud.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe32e2aef8---87253985158.pdfIn PDF document text
    • http://1hozain.ru/files/userfiles/files/37279665419.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/24299027704.pdfIn PDF document text
    • http://isagenixmakessense.com/ckfinder/userfiles/files/zufewimagujozisigatu.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9244e6d99a---romusikir.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/76971522564.pdfIn PDF document text
    • https://mygo.com/ckfinder/userfiles/files/pifogalujetevomivogasat.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609451db5a648---36997038788.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=hollywood+hindi+dubbed+avi+mobile+movies+free+downloadPDF 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_off0000f8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000110f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F1 17268 bytes
SHA-256: 4b1cdbc7646ba92a61a02ccf2e81b693206dafe45d280d91f323dc7eca67e331
font_02_sfnt_off00013e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E09 11020 bytes
SHA-256: aa648a8a96d2a88c8b2fbe2ddb20105cf4bc6912e5f7b922c0056ec4c99510ea

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