Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cee18b6cd806f36…

MALICIOUS

PDF

86.6 KB Created: 2021-08-20 20:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: cc52ad9df7c1b0f393f0926adb507cb7 SHA-1: 15c522a3dc59c6ac028a450203711ff2986c6c9f SHA-256: 6cee18b6cd806f36b47a3cc8fede4270402ed4ad1d1230dbf51120717525eb20
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains multiple links to external sites, some hosted on compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of 'invoice' and 'download' lures further supports this, indicating the document is designed to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=application+for+duplicate+marksheet+to+principal+in+hindi PDF link annotation
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/378b2530d98dc31086126e4da5873601/68238820980.pdfIn PDF document text
    • https://nhatngudongkinh.com/upload/ckupload/files/wuvoteji.pdfIn PDF document text
    • http://www.facyt.com.ar/ckfinder/userfiles/files/22774526686.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16072ed3c65dd2---femamumixeniz.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/91833667806.pdfIn PDF document text
    • http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/gumidevazajuvez.pdfIn PDF document text
    • http://digjamaica.com/app/webroot/files/bijux.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/sebatabokosuzizezoso.pdfIn PDF document text
    • http://fhs76reunion.com/clients/0/00/009202203981f132fd14d012a57c0fe5/File/21127886623.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cb27fb6de5a---wasusom.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/a0ba98700a616ccf9179d85343a57702/25001277145.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160989ef303980---61084217558.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608182f64cb38---nodijabepumunawamiwisi.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b40784b96ed---zowepalunonikezuzoli.pdfIn PDF document text
    • http://kiddeefire.com/media/userfiles/files/kisavuvi.pdfIn PDF document text
    • http://dailynewsodia.com/assets/ckfinder/core/connector/php/uploads/files/ronixuve.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160afbccc82feb---39552312416.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/44361966621.pdfIn PDF document text
    • https://ms02bet.com/contents//files/zibizizusunanapiju.pdfIn PDF document text
    • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/82599233039.pdfIn PDF document text
    • https://polnische-zaune.de/userfiles/file/49446692892.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d4937f76a---bofogudesafapolakuv.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084e1dc233f5---30730319349.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b1202a48ea5---82628034600.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/dajikufif.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_off0000edd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD2 17104 bytes
SHA-256: de086145c91c35e0b28f1c8e737dc4217b19e0243de42d6c121592011647d09f
font_01_sfnt_off00011a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001329c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1329C 11060 bytes
SHA-256: 6012351f7e9f5c636a28d26b4eacc0d589d857e415f708cfea71632bbe71ea34

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