Malicious PDF — malware analysis report

Static analysis result for SHA-256 d197130ff0b10d05…

MALICIOUS

PDF

71.9 KB Created: 2021-09-04 03:13:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: cc8ec7f46d044bde39450fc85e9b0f45 SHA-1: f8a2897f5efd8f32408b0798e7a137a798fddc07 SHA-256: d197130ff0b10d058529a3913e3b4b9bbc4d7b0c7bf8da9f2b36ac6bbdbff047
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, likely intended to lure users into downloading further malicious content or submitting sensitive information. The presence of multiple external URIs and the compromised CMS upload link heuristic strongly suggest a malicious intent to redirect users to harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6630

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://philabc.ru/uplcv?utm_term=11th+class+english+grammar+pdf PDF link annotation
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ac59a7788---suzodujomasavetegonij.pdfIn PDF document text
    • http://neboskreb-irk.ru/uploads/userfiles/files/gigeporulubujuneravenir.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/9d9810f3ff1e10a53903e53938af6df7/ribikilazifofubibiz.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e079a9a3af9---bigetuzupupulerizis.pdfIn PDF document text
    • http://fxlcd.com/upload/file/89178159587.pdfIn PDF document text
    • http://wami.cc/data/files/kitujas.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d519d840bf---livopadulurovodanaj.pdfIn PDF document text
    • http://picart-personal.pl/fckupload/upload/file/43393306130.pdfIn PDF document text
    • http://streetnn.ru/data/upload/ck/files/pomazokukopajusifavuxamo.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161238b7900fdd---pemazemijawabozakedaxu.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1bb461f68---95980526644.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/pufiwexeburonafuxekudiwe.pdfIn PDF document text
    • http://hrjok.com/uploadfile/file/vituragaxabomazux.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096cdedeb3e6---nosepibebenikuveburomaja.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a730ccd138d---dubodidibisowu.pdfIn PDF document text
    • http://starlightcelebrates.ca/clients/4/43/43e9139217482d7666ce300faf566241/File/ponetijajixuwur.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac567f32261---juvabe.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/88395166039.pdfIn PDF document text
    • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/95226867315.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/6fc3313b3bf292cafd59a70c917f77f8/21293659443.pdfIn PDF document text
    • http://eachfun.com/ckfinder/userfiles/site_eachfun_com/files/140389801.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161004319dd9fa---gejonaxuwogobosokopupof.pdfIn PDF document text
    • https://akrmedia.no/ckfinder/userfiles/files/wazadasowe.pdfIn PDF document text
    • https://wupaojichangjia.com/d/files/26181085686.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/ufcav61d8rggebqj2cbn1ekpmg/fapedoxade.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_off0000e112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE112 18648 bytes
SHA-256: c8fa347dd0789490d51ebf2dabedac71e9219cdc643e25dae63d1fee60fceb3e