Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2af6b042fcdee8…

MALICIOUS

PDF

86.2 KB Created: 2021-07-02 23:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f9239359025bfcffb4b6e306f657165b SHA-1: 13a62803ba07076a34a4d055b6a1b74895b97f62 SHA-256: 3d2af6b042fcdee8c29ba6c3e3cb623d0e5eb778e406f9349848fcaede271924
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It functions as a link farm, directing users to numerous websites, many of which are hosted on compromised WordPress installations or disposable domains. The primary intent appears to be directing users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 6

  • 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
  • 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://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/o97oscsb5ar2usvgobaon66r52/penurawug.pdf
    • http://airconbank.com/upload/fckeditor/file/datovotevosunevubufosuse.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/rus21n1s5hrvgterrtc07cd891/82392865338.pdf
    • http://vivaibonomo.it/userfiles/files/51430560421.pdf
    • http://www.la-rocca.pl/app/webroot/files/files/95671348824.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/f8652d12826e5e54bcdd3d78ce956a38/4715336160.pdf
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/71f00ad97ddf19d15b428a45068179dd/lazodixojolaz.pdf
    • http://www.jindatunnel.com/up_files/file/77134657298.pdf
    • http://bephoangdung.vn/uploads/ckfinder/files/19951526974.pdf
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/f13f5e0d30742d40d46b7b6c9b425f61/54859168140.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/3df1963322572fc74472edf2fe025612/rovumajawur.pdf
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/cb7tm16f94fvh3pqbhhe2ug1hf/54470356600.pdf
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a01f02b0be0---47862409802.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/d159ce8b4cb4ebcdc4f071d6d2eb6ec4/50197931141.pdf
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/ski9779b4ppcdbhrpkqodvs0cp/sekudulenumemupuvuguzori.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903e62d681a---jeripi.pdf
    • http://eva.am/files/bfb7dadc92e0bb63.pdf
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/d54884cba8a3be3ee0c5a50ab790bd57/besopipivefokoxenevilemu.pdf
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/h8hbl2sc3ciqf2h281feojobnv/50154448282.pdf
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/5d9cb11c638dfd005fd57efffb40803f/61233472135.pdf
    • http://irishheritagesociety.net/clients/7/7f/7f3653e4c5d791bf76f28d2bf9929747/File/41362190215.pdf
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/16090bf3677b93---senipi.pdf
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d02345be8d4---34077886467.pdf
    • http://oasis-inwaste.asia/files/file/giluroberin.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=bible+verses+to+memorize+for+youth
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 16792 bytes
font_01_sfnt_off000106f9.bin
83a9470f304e8d7b75020ab5dd66113c15cbf4b0eeb49173e1176d77cf00a050
pdf-font-stream PDF embedded font (sfnt) at offset 0x106F9 16788 bytes
font_02_sfnt_off0001328f.bin
108ebadf2f570a4747d322216164fdc1efb41ca1eceb7839c38e22d6fc342ac2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1328F 10748 bytes