Malicious PDF — malware analysis report

Static analysis result for SHA-256 dad94be3cdac84ee…

MALICIOUS

PDF

215.9 KB Created: 2021-07-15 19:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: eb779ef0ce3a8205ad22899bebfa704c SHA-1: 1aecf66faa3f44908c42158940c28e7512888642 SHA-256: dad94be3cdac84eef44bc9a2d08c6290be1d483b56b8012c82162fc4bef43831
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9741

Heuristics 5

  • 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.
  • 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://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/rho5jquuqukcccm8sj52nlrnq6/18759776062.pdf In PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16087243befae0---rutafil.pdfIn PDF document text
    • http://fuga-hotel.com/CKEdit/upload/files/57099704269.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/mi5fqtptdppson04561a8b5cp9/9731914324.pdfIn PDF document text
    • http://wowbond.com/upload/Fckeditor/file/bawireperaxozajalij.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/57192135392.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c05c823b1---24371689071.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/jigefitamasuridirabejiput.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6c44308bd---desokapetujafavoxe.pdfIn PDF document text
    • http://elmbbq.com/uploads/files/75291273552.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/64vv4mf06rk6uu4rld052qjs3t/94174822028.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/7nb53hjlh271ccb6obc9jogs6b/45747082159.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/aa85c7cce6b0e0ee6354009a3057b27d/22571486194.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8ac622909---daborukikevajujewin.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/db282b9907ae45a8066401d9cea46b8c/ligumulisegiweti.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba16a8edd23---69315688906.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609218cedb28a---9905750094.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/mumet.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/33116b7a818fa20155c999a01b903cf3/93832745394.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/e3dbd450397df17d031caa7d36d93e23/79292058743.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160abd4334f2aa---21832728387.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=the+holy+spirit+will+speak+for+youPDF 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_off0002c2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2B2 10708 bytes
SHA-256: a08050b775cc356d0cf8d3cec6a566364fec85c3598c5dd8e111073261260f36
font_01_sfnt_off0002db87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB87 17132 bytes
SHA-256: b90d1f50d242bb1b3f3369f19fefe68946d9facdcb6a7531d9207daaa019379e
font_02_sfnt_off0002f4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00030cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CB6 31308 bytes
SHA-256: b0c8db199d028be33a15224d2bcd457ec95590fd293814e5d80d123a7698768e