Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bae287253eb3d4…

MALICIOUS

PDF

90.3 KB Created: 2021-06-29 00:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 81c4043ba677700f3e63a4254d50e860 SHA-1: de1e6e30ef689ff91722c59b9e70322161db85fd SHA-256: 96bae287253eb3d4c71bcbf512a93ab0c65e0a8aa3dfacdb846ee1de988c79fa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to potentially compromised WordPress upload directories and other disposable hosting sites. The primary purpose appears to be redirecting users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609adb9ea7427---47625755088.pdf
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/cdd33039a401d9702f906f37e6e43c30/febefilim.pdf
    • http://loscogliodifavignana.it/userfiles/files/67659002611.pdf
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae6b00a4d1---xadurativejuzegonugube.pdf
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/86a671a63b8c785f9d9e424977af4488/roxugurijoba.pdf
    • http://happy-travel089.com/CKEdit/upload/files/56485247429.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/74802f904766e1310eb67e361dfd5be2/28430606112.pdf
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/c8c2b4a03e42de2684efda66ce2c9522/luzaxaniriwafapizazofopa.pdf
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d76bb71d1---gapogu.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8531524ab3---34835310459.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/eedhdvld8orsvtklqmkn4d45i5/zopifu.pdf
    • https://aradovan.com/userfiles/file/53519845827.pdf
    • http://dansensvenner.dk/imagesfile///33861523732.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a363eecd3e3---tapawesafezowujimoz.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b289ea23e29---42427071102.pdf
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608b93d10e914---42111894442.pdf
    • http://amphorabeautyclub.com/campannas/file/visimosotuxofoxovavabapor.pdf
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/metofenapogekogibusa.pdf
    • https://bandotrading.com/uploads/file/runuv.pdf
    • https://capecoralliving.com/media/file/zigarexurapuxuwa.pdf
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4895ea0a1---lujomiv.pdf
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/uvro208cu3m0sqtbdb184of9r5/47645226503.pdf
    • https://editions-tlp.fr/ckfinder/userfiles/files/kafater.pdf
    • http://jmlukanich.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nidagiboxozu.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=build+your+own+sports+car+on+a+budget+pdf
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/8cbdf1fec801acee360eb7e1df871064/70425946549.pdf
    • 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_off0000fcd4.bin
41acbacee9e4c1ee6b740d27252b1d0bdbf17586d4dae29f9e481c789d4e3462
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD4 11288 bytes
font_01_sfnt_off0001172a.bin
0b659499706722095039e4ccca0fd197f6cfd94e4fff33f8b8409d1a5c51f19c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1172A 17192 bytes
font_02_sfnt_off0001439c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1439C 16792 bytes