Malicious PDF — malware analysis report

Static analysis result for SHA-256 094ad0719ebfbfe5…

MALICIOUS

PDF

94.2 KB Created: 2021-06-30 03:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a03d2b5e1174a2e054cf38b6788b2c5c SHA-1: 762f5680379dd55e9aa0a7f2b8a35db67b7dfdb0 SHA-256: 094ad0719ebfbfe544c89469837f4065472f55a6a4ecf495b5fe6740f3f25240
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely contains malicious content. Heuristics identified it as a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs and the nature of the link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7441d3d01---gibezifedalit.pdf
    • http://wfuchiomega.com/clients/4/46/46a815049f9cfb11ab63b386d19cdfb8/File/61537763498.pdf
    • https://haltia.mx/sii/ckfinder/userfiles/files/mofoworuxubokinivo.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/b1ef5832e764356f9941d67ff9d8cfd6/18704297454.pdf
    • http://anaminfo.com/attachfile/file/49609247986.pdf
    • http://stellarp.com/userfiles/files/bonukonuditojolarakidixaz.pdf
    • http://insidethedigitaltrend.biz/userfiles/file/34492169318.pdf
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/jusugerapekeximafineve.pdf
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/bgcuqnauphmm3rakm1o65oomm9/limotorete.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/k7hcgjlnc9ger3o7q3fe91fhol/bokefotifuzugukutodidise.pdf
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/bc9d595387554bb2df15b5769ba49315/57563654308.pdf
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/079cdf066c9191b6d45ca443165ecf5c/94950072107.pdf
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/87eeb1e306a62f9032b8a7ac0ab4223b/58228561522.pdf
    • https://beautyyaurient.com/editor_upload/file/tanugeduminivuvamuzixa.pdf
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/10207e7c01de6fc0d5a699513f0dc0a1/fovazol.pdf
    • http://sunwisechem.com/Uploadfiles/files/39429451118.pdf
    • http://marmaraisg.com/images_upload/files/wedit.pdf
    • https://bbpartner.cz/userfiles/file/ponugasiv.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/0d8f90adc4a367f4d22ee72eb77e2741/50856789309.pdf
    • http://walthamclassof1985.com/clients/5/52/52060312c10aa816a718e90a19a6a7a1/File/bozezut.pdf
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/28b75f8db1b935a2561fa86d6aabeffb/75336451004.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/49edc654111bed6c57b32331402f8516/276210630.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=smirk+meaning+in+tamil
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/090868b521ca87fc5e07de3fa2d35ab8/lafudiwisiparuz.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1c3.bin
154284e629731cda25388b2868b72394e9359252d31fd210d0ce6f2bc894cc0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C3 10328 bytes
font_01_sfnt_off00010906.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10906 16792 bytes
font_02_sfnt_off00012118.bin
b53fee1e2fd76e3199a2d42763f6e63c174af89604a90a291e1ba112db57e39e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12118 18960 bytes
font_03_sfnt_off000152b6.bin
a33b7922d651a2bd4172152069639ee4268d6e16fb5ffdfe9e725f0b3805cb38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152B6 17412 bytes

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