Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a745ac7d7a6ef0d…

MALICIOUS

PDF

95.6 KB Created: 2021-06-29 23:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ac128548999a58da842aaf9cf1a0ea40 SHA-1: f7d70cd3526ad954c4314b7a0d5694d6d877e715 SHA-256: 2a745ac7d7a6ef0de698de72b94591003b92a85903a066c015996d866af6cd67
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, presenting numerous URLs that point to potentially compromised websites or disposable hosting. The presence of multiple links to WordPress upload directories suggests an attempt to host malicious files or redirect users to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9825

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 http://alliance-ltd.com/userfiles/golesix.pdf In PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160941288dba37---3121594738.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b11b8fe4f---redikefugemagemanin.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a7489dab961---dofuvosafata.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac274b1dbfb---32742880767.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/d79c525dbcc9e5cfd218124af2c740ac/1610835087.pdfIn PDF document text
    • http://droprint.my/home/ququ4923/public_html/userfiles/file/zafapufinumiligatad.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/88733519928.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9e921a1e2c---rilijaparojiwodapirejub.pdfIn PDF document text
    • http://szolnokepul.hu/userfiles/file/todata.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/0e3acd70cdeb37ea025ed5d6748c9689/xemobigakivutivuso.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a52a2942c---3859159762.pdfIn PDF document text
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/78452889112.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608633e176044---wunegagawax.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089322dbc2e2---felufevogusetujude.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/1b6e358a85e424cf30f4e73ce82961b8/50272326668.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608efd243aad8---74532122302.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/46148034852.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/4d6ece5dd4d6abf6ed6bda02fccbf782/29655558600.pdfIn PDF document text
    • http://mlight.cz/archiv/file/99633631796.pdfIn PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/fceceef58313f72a2def770469ff64a6/dujagenumu.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/2baclb1l2u1oiri2q2crktnpoh/52726213055.pdfIn PDF document text
    • https://medtek.vn/storage/file/98334841099.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=creative+4+letter+wordsPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160996927e53ed---kadikawutij.pdfIn PDF document text
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000effe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFE 19500 bytes
SHA-256: 5fb91644d2c0ed00dff2441f0b6971dcf7fa0f8d7f36730514621ba6d69f88c0
font_01_sfnt_off0001217b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13992 10396 bytes
SHA-256: 5b174a0fc6e50562327981f654abc4382b6317bae56dfa0ed7cb70d7b5a2c9e5
font_03_sfnt_off0001514d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1514D 2132 bytes
SHA-256: 082c9b3953ac2190031fef02773bbedf3b960673f1c72205faf0de332286f4e0
font_04_sfnt_off00015ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AD9 16172 bytes
SHA-256: 916135c0327089d6ec8c0c09e81da9389febfaa8ec9b6c4177b8b4e9f582ebc4

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