Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75f0d7f92f4974e…

MALICIOUS

PDF

103.5 KB Created: 2021-08-01 09:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4063877a80c44b63c27ce325160081cc SHA-1: 2cbef374b4dc6c31cfd3c3b8c584f79b01998622 SHA-256: d75f0d7f92f4974e18f3dd147b126a9ac56714a2802934f60deb91b63df4a2ba
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple websites hosted on compromised CMS platforms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of numerous links on potentially compromised sites reinforces the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/uuru7im5qedrs0caibd0u5m1la/jebabozetulikatexijil.pdf In PDF document text
    • https://egyiksem.hu/uploads/file/45295957554.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/0cd48e8e8c25b2e2daf670d895977e89/39298189576.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/6cjr0ucmcruigfvcc5l3ng5k88/jorog.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff913343d6---59833223774.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/c898a743badc79ebf85d48e34554b543/senizipusumomikozasijeris.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/o0pdce5ugoq4v9lll6jlnmbnsa/39874581566.pdfIn PDF document text
    • http://immobilieninvestors.eu/userfiles/file/najib.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/0d9e9f6c46b68a2ad2bcdf4ea5d1a082/gubonotuzesesevaz.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/vakaz.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e0cc3c45e---60283780716.pdfIn PDF document text
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078a9a3653d5---13055599895.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/4043679970.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/betaker.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/0ea02cee1d09204078c3702e2076b56d/togifolavul.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/71806571801.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160864307ed610---84901258224.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/6b68bb85924c011bf3d77ec8fe027de3/jivazunevelepinaxob.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/pidekozovobamefi.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/42441440096.pdfIn PDF document text
    • http://hoshitorionline.com/uploads/files/koguwurozimikuxu.pdfIn PDF document text
    • http://alcantara.cz/data/file/80298363595.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/822488ce515b4cfb88e8b89d841ebc08/pojunene.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=the+crucible+escape+room+crossword+answer+keyPDF link annotation
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF432 34416 bytes
SHA-256: 74e16168961a697206f100c2e89f5f3d2f6dcd004c9db638aaa991e9c6c5cd08
font_01_sfnt_off000143c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BD4 17096 bytes
SHA-256: 8554b52416975ffb8baee07f46831deafa66c699d6439ee6400653273f572dca
font_03_sfnt_off0001750d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1750D 11176 bytes
SHA-256: d2165bb8797f4abd8bce15da018b1204964e480d7780305d2d37825a5ff86079

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