Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e042f345097603b…

MALICIOUS

PDF

79.6 KB Created: 2021-09-07 17:34:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f29ce7ae4d089145a4285a378c3ae2ae SHA-1: 10423566faec99fc4f223497d1f356f758896e70 SHA-256: 7e042f345097603bae2c51a6d22382bdbe4bd7df483fcdef3a9c58be65a37185
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous external URIs and link farms pointing to compromised WordPress upload directories and disposable hosting. These links are likely intended to lead users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2676

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://wastran.ru/uplcv?utm_term=stress+strain+curve+for+different+materials+pdf PDF link annotation
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/67fdb1b8eb436d7a5662c4505a3107fe/foziz.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161120bb1c890c---pesotejofevaduzonam.pdfIn PDF document text
    • http://j1medical.com/uploaded/file/dafoganomufogejekawu.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/71331563997.pdfIn PDF document text
    • http://preprod.app-nomads.com/ugecam/admin/ckfinder/userfiles/files/kowosanilag.pdfIn PDF document text
    • http://chothuethietbi.info/img/files/womavibamewujazizexi.pdfIn PDF document text
    • http://thermogroup.ru/uploads/files/20018359942.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b2d6ceb06---3025690819.pdfIn PDF document text
    • http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/naxufikepiguwimusej.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/se40t4a1k19iq6h18848ghju0m/30204789397.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fda4c5cfa---10975565588.pdfIn PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210516090604_1387626517.pdfIn PDF document text
    • http://archifolder.com/userfiles/files/31220069528.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/44cc8e482a9353e63e8d3c12c921588a/sanipiwediwu.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/tafowiguvunako.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/1f0ab4581f98155eba7a836d2f2bc18a/73873558733.pdfIn PDF document text
    • http://1yunnan.com/ckfinder/userfiles/files/mulon.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/48807251565.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160917eda1bedd---92657512836.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c92fd6b5548---zenorop.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bc63881138d---10812926957.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/gedolebikubumorabuminibiw.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607183ce4def1---legaxuw.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b51b1055d51---61734037219.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/43503036125.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161199d7e5bd13---68714104622.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54C 11020 bytes
SHA-256: a1708dc57faf18e1637ed48869f5abd7d3bab479536aeeb48f5162feede99121
font_01_sfnt_off0000fee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1