Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c4eb9e649fa7f7…

MALICIOUS

PDF

81.4 KB Created: 2021-08-15 10:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: d65fa61da55d7635064233e45603c37d SHA-1: 10478fd8509d152cc7d17bf310358c327901f61c SHA-256: e2c4eb9e649fa7f74d8276e36b61c2e784da854622e41e246dde284d0c808030
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The file's structure and the nature of the URLs indicate an attempt to exploit users through a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/68d53d63c951f05e5a28f2c60fb823b0/jevojepapobelefewur.pdf In PDF document text
    • https://kocarbon.vn/luutru/files/64845766368.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/c27b50574dff433391fec0a140e218cf/rugetap.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/n827lc3tu44hkabulvmia7megg/77335384082.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/26690234852.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/48417394687.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/d5331f928c67ff60090556567a1521b2/56120828052.pdfIn PDF document text
    • http://3e-machinery.ru/app/webroot/filesfiles/vudoweboposinogaza.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16081b1d5c1eda---96126003541.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/10306566195.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/c951cacdf1120f0dfa835917a92243b9/sinasowepipovawuwi.pdfIn PDF document text
    • http://cw-cut.com/uploads/file/26330983767.pdfIn PDF document text
    • http://universalthailand.com/images/uploads/ckfinder/files/98154129836.pdfIn PDF document text
    • http://phuquytravel.com/nguyenvanlinh/files/23295091570.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/lamozonatozina.pdfIn PDF document text
    • http://luingpyrex.cz/foto/Image/file/jenimupopepabepewi.pdfIn PDF document text
    • http://winfielddeli.com/ckfinder/userfiles/files/31407369712.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16083961feb6d1---43216243587.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bfa67042c---rimununewivexetomede.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/blgheur6pq3i8jlhmp5nu74k85/sinubalovite.pdfIn PDF document text
    • https://mecaniquekd.ca/upload/file/39492669700.pdfIn PDF document text
    • http://peusch.lu/userfiles/files/62664639857.pdfIn PDF document text
    • https://kede.org/userfiles/file/xekenukekofuribegek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=9.+sinif+tarih+soru+bankasi+pdf+indirPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 10888 bytes
SHA-256: 841039858a13e67afcaf00e2361d9479578eeb3211a0172700e76ca474f433ce
font_02_sfnt_off000108ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EA 18496 bytes
SHA-256: d1969e4f519425692263ac5f956c473a3732c96e108aab358af8491517c29ab7

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