Malicious PDF — malware analysis report

Static analysis result for SHA-256 9604583fc0b52674…

MALICIOUS

PDF

224.0 KB Created: 2021-07-05 13:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a5a3f6acabe68a2bc4d6fb3972490be0 SHA-1: 1e37184d9ae81b3581d106da8457292c31c8b10d SHA-256: 9604583fc0b5267408ed2efdbaf767d839cab8747966b6f0aa16de58a4fec9ff
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress upload storage, indicating an attempt to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a phishing or malware payload. No scripts were extracted, but the presence of numerous links to potentially compromised sites is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7825

Heuristics 4

  • 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.
  • 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://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/97f7egg4vil1gm1eedha4e8tdo/47409535488.pdf In PDF document text
    • http://microcement.ua/userfiles/file/38244897289.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/8df1d72c9d3c6894642e9ad097f64a27/23815939724.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/8855914668.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160b794a55fe90---7563921148.pdfIn PDF document text
    • https://fruzsiflame.hu/userfiles/file/64868756913.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a197ca2fd42---kumevozedotigetifa.pdfIn PDF document text
    • https://celebicatering.com/upload/ckfinder/files/31697515804.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acca1d218e7---vizububerubif.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/19288201616.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/xidog.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/37eaf8945322b26d1f3937347f4d11ce/94492803631.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/65e44h82n0ld52q4btgi4evto2/fabedomezulavekona.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/8ie26cg4irghlra1mckh113d07/waxerajibitirusekuguxoma.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/nneisenj5hrh6cbg0klnrv7m77/modememoguw.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/aaa684cdc11ead1290be044217c550fb/wogutalikumuxatev.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b02eada37b---muxemewawuf.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f154e0f761---gozejorujaxovudet.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/tejewelexazawixol.pdfIn PDF document text
    • http://ylphs.com/ckfinder/userfiles/files/50668426937.pdfIn PDF document text
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/75785552225.pdfIn PDF document text
    • http://sun-tes.ru/files/file/4681259491.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/a91bc290cdd746dabcabe7080b95628d/48204346030.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097f9b3c39b7---42289343162.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/5763791215.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=the+perimeter+of+a+sector+of+a+circle+of+radius+5.6+cm+is+27.2+cm+find+the+area+of+the+sectorPDF link annotation
    • 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_off00032def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DEF 11488 bytes
SHA-256: 09082af1d415276d876092f2d916f61529c2714706b0a10dd3aa6dc49d2185e0
font_01_sfnt_off0003490f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3490F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00036120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36120 16088 bytes
SHA-256: 450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c