Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde2ba47185b2fa2…

MALICIOUS

PDF

76.5 KB Created: 2021-07-06 04:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 12f8554c4260efe3d3876788aa4ed35b SHA-1: 25aaec26c386f82516eb1d4ec74da06ab260eede SHA-256: dde2ba47185b2fa2bcad95ba03fc6067c7a85ed48517ef048598bb1215db14f6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains. The presence of these links suggests an attempt to lure users to malicious sites for phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6230

Heuristics 5

  • 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
  • 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://allytemp.ru/uplcv?utm_term=coleslaw+dressing+without+sugar PDF link annotation
    • http://dulichtantai.com/files/uploaded/files/boxiwexabonirowupuv.pdfIn PDF document text
    • http://kcobafl.org/ckfinder/userfiles/files/gomusi.pdfIn PDF document text
    • http://metallpress.info/files/nadekofulorelus.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/sejuxexaxasanefitekapa.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/691947a38867ab5613bb54aa808ab14a/62016369303.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/dihlj10v859p8e2cuk94l28457/vepipisaguwogon.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/85113010441.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/98c339468a7371f7b7e6bd5793f442fe/61741186763.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160cb77f7f2429---dorapovirojusoxix.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/321c52505760c4f5112153e49a2967bb/20476114830.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16090fb5d6b51e---30113365417.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/6qjvbhf0lnerntorheju8h7can/29168790069.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088705f84b8c---91194728753.pdfIn PDF document text
    • http://dragonera.cn/admin/userfiles/file/18659728856.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bee219c9eb8---93149980391.pdfIn PDF document text
    • http://theleadershipworks.com/PO2/UPFILE/userfiles/files/valofuw.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160cdec2e00f84---44559627994.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608870da02ed8---9950821536.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf6152b536c---segenilugofezozan.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/g6rfikvf4tkijimvibh7deest5/nuduxanomasuxuzegugu.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b291701290b---vaxirasigujafatepojinezi.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b59efcbb68---45977306206.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607022c2c4d59---jefenapavun.pdfIn PDF document text
    • https://people11people.com/uploads/File/76156244172.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd5db84dea---nejapopejasurujovi.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/3867497991.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CD 17776 bytes
SHA-256: 9fad1751caebc221950ab97c39d5896fdca0ae8b81d8567d0d145ac2580200d4