Malicious PDF — malware analysis report

Static analysis result for SHA-256 faae6b1ea01e9c3e…

MALICIOUS

PDF

95.7 KB Created: 2021-09-07 02:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 5cab73950dd5358fbd5d5ee8dca3e8a8 SHA-1: 312d34c9ce3d269b20f90fba740061072d2048c6 SHA-256: faae6b1ea01e9c3e2771c5a9d40ad3a67231bfd39ed951bc1446fb948570a8a1
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to compromised WordPress upload directories, a common technique for hosting malicious files. The presence of numerous unknown URLs suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16108fa1def4e8---87774256014.pdf In PDF document text
    • http://poorclarescork.ie/images/77789718959.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/bf286e3c79b78da833cc10f60a25c12b/xevizovo.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/8c0676e282ab6843cd782f0bad108941/fezipavim.pdfIn PDF document text
    • https://cafesca.info/ckfinder/userfiles/files/gevigeparigalaxe.pdfIn PDF document text
    • http://gaongonmaiphuong.vn/webroot/img/files/zitidolawepinude.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/samezituravireje.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bda3f7895d6---73753967976.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/7sm82voif75km29ff5ae2o0n47/zewunifowejobekuji.pdfIn PDF document text
    • http://jordanfamilyreunions.com/clients/5/51/51534e3e38036466a76ca8a024fd4923/File/nuzejexataxowepogepizon.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/20214292222546655.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/2d98cfaca56ad94abd9012d26215193b/49977334329.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210516132053.pdfIn PDF document text
    • https://mindspacepsytherapy.com/upload/ckfinder_temp/files/20210617155325.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/05101d65378a3e487710c3efadd866df/dinutuk.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/xuvevikelakejowux.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b89787a0067---29458373851.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/429c60d4d3fe20f09e12f115f85d337e/68135764290.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/465960a0833ce41752ed03ed4c19aca5/63346441824.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5dfe5c0048---8158745421.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/75749365441.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/rc38ui2mccn4tv2h4kt51m4ngs/jebuburodapesikevaled.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/179d6ec6e848e4967700f7a847e9d7fc/vuforopukibejolobepiruvi.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/besotewovazuzibolutejo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=vaillant+system+boiler+manualPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10696 2120 bytes
SHA-256: d379e7e33a0c3d504827bd609d060491fcf925ac03517036953345ed3fb6af85
font_01_sfnt_off00011013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11013 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001282a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1282A 10592 bytes
SHA-256: 5b52163ebdf4083f5a8b14bbe2cff39ca8fd5495ce24c893e18947307e265e00
font_03_sfnt_off0001405b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1405B 18748 bytes
SHA-256: ad30eadc5e0f171f96813c243aac0fefe318c3e85336e7b7ff2216f703d7c3cd

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