Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae02ed8d53f8738a…

MALICIOUS

PDF

129.2 KB Created: 2021-07-02 08:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 714d78fddb94c1706cc9d8d1c8c1345c SHA-1: bae6051da9c1b17edb278043a49117c9b24cc2e7 SHA-256: ae02ed8d53f8738a8930137c4aca4ec7da83651e7bb843d927ad51963918eca0
156 Risk Score

Malware Insights

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

The file was detected by ClamAV as 'Pdf.Phishing.Trojan' and flagged by an ML classifier as malicious. Heuristics indicate it functions as a link farm, pointing to multiple URLs hosted on potentially compromised CMS platforms, including WordPress. While the document body is unreadable, the presence of numerous external URIs and the specific heuristic firings strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/f7e42feb3299f4f8d846933412df2eff/5526901886.pdf In PDF document text
    • http://donaldbermanmaimonidesgolf2021.com/clients/0/0d/0d43fbb8ff91cab41fa1b056c0d912a9/File/najetexabibetisapabopawul.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088d5cc333d4---nizaragiduzakozurikipexe.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/c87db4cbaf9d0883646e3024243b0c6f/57064465015.pdfIn PDF document text
    • http://slp72.com/clients/7/7b/7b902bee17765b19ebdde6030f24742d/File/2675336146.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/f0ec0cb703202d531ed7f60c4ac8b7f7/35009708880.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097aaca218ea---99914055899.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c152d57abb6---29299460038.pdfIn PDF document text
    • https://everestart.com/images/stories/file/veboxanazuvabasufinazewek.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/vqrci70fsjuqpkvb0vjumnenlt/kimobodupefakuduk.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c98de20522---tutowun.pdfIn PDF document text
    • http://laweasy.kr/userfiles/file/47039347013.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/62304685412.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949d9227eb3---22791137801.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ae328c726---tonagufiz.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707a4269445---59455597383.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/be47f8e087d87d4aa6fca0b31c121eee/25557808531.pdfIn PDF document text
    • http://vieclamquantri.net/upload/files/92551475123.pdfIn PDF document text
    • http://teraval.cz/res/file/75058452465.pdfIn PDF document text
    • http://braciszewska-klimek.pl/fck_files/file/28127756233.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ccc3112db---nuwepetipuwabidowonaz.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/teturokewadigovivo.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d078c50554d---kiriwutumuneg.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee87010ab6---56220045778.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=fartlek+training+is+used+best+to+developPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19809 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001b020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B020 10940 bytes
SHA-256: 20b95323151ae9ff11d8f92516a8b504271d55eef0d2fbb010d8880a77601f69
font_02_sfnt_off0001c925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C925 17512 bytes
SHA-256: ae05832b4f0ecd046bc4141cc65aacd0abd1d25c9122009af0b0fe47580abca6

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