Malicious PDF — malware analysis report

Static analysis result for SHA-256 54aea1f9685e565f…

MALICIOUS

PDF

89.5 KB Created: 2021-06-26 21:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 39ba71e6d7e7582eb7007e96e827a3c2 SHA-1: fc16faf19ebfaeb0317485ce93c030b9464309c0 SHA-256: 54aea1f9685e565f73512a47fd4770df109b832bc38c66cc5a26e5b4e9e536c2
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. Heuristics indicate it functions as a link farm, pointing to multiple external websites, some hosted on compromised CMS platforms. The embedded URLs suggest an attempt to redirect users to potentially malicious content, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/9joe0eqpj1r080c7fg616g22i6/69370794649.pdf In PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1606ddd1f53084---62344002678.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c928141d2a---21251645469.pdfIn PDF document text
    • https://rajatotogroup2.com/contents//files/29037119223.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/a455ddd716e0eeb8be05f224efca5ea0/94790878035.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d31489672d8---4458426456.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/b4aa3c9b9e1b5549031d055b072b3b3d/betebuzabekupovupudowijex.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name//files/99245674859.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/o5qequ5jnhccu547g09j6c045v/90452545224.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/cb8tad5bv2umvrl85k8jsqvvqu/83478436282.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/r4405c0tng7dl7mlkfa7c46lmh/xirilipitipe.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/76904369383.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a49d54dd1b---74193224821.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a68c2a45fea---82393523021.pdfIn PDF document text
    • http://www.mueblesgamez.com/ckfinder/userfiles/files/25994989669.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac8637bd0b---nulabunikefoluzonekuzenon.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/b1834954f84f4934f1665a24db37fbc2/vesivuzelofatabiji.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad5d59a527---89825461178.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/1ad48036ac64e6aa1ebd0b5836a6dd2e/75788271638.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210505190537_468420948.pdfIn PDF document text
    • http://beulahcooleycollection.com/clients/870349/File/78910358943.pdfIn PDF document text
    • http://greenbrier101.com/userimages/vatojorazajemafosijilaw.pdfIn PDF document text
    • https://abeess.com/userfiles/file/perugiduwafapopolovukewo.pdfIn PDF document text
    • http://year-c.com/upload_fck/file/2021-6-5/20210605121317474931.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=scary+devil+halloween+makeupPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBF 18212 bytes
SHA-256: 88b0575c716d2946b33342e5b705d287fb786c9c8d243609836ebd59e6df9b5e
font_02_sfnt_off00013f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F94 11048 bytes
SHA-256: 239b778bba0b1c2f40136b96db2b47d6fe0ad89aeaa63662dad4610fc34400eb