Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f94485160d8c4b…

MALICIOUS

PDF

100.5 KB Created: 2021-06-28 03:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 509140962738f378da591487e39f0b8d SHA-1: d545a91d2faea89b6fb949481d5e570bc6d85ec1 SHA-256: e6f94485160d8c4bbcc68833e2d03fa1795fed4815b98cc982d38a933a3c85ca
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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://eternalbliss.net/file/sotejamodixufoboj.pdf In PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/s0fpgrhdck4tmfil4n3hp9um655rklg7/fewakijanoxonix.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c783db23e06---3144752224.pdfIn PDF document text
    • https://fong-cai.com/upload/files/kinuvavomogavad.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/1kgm7dgfuuk5us6j59enl5i0lu/60366393390.pdfIn PDF document text
    • http://toyotarentcar.net/FileData/ckfinder/files/20210618_F8F952662735090D.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/gotagibupa.pdfIn PDF document text
    • https://maturana.cl/upload/file/73729761592.pdfIn PDF document text
    • http://agroanaliz.by/upload/editor/files/bewusodet.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075aea8be78e---19292251336.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607b829602c65---xitipegilo.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eae6a920a0---64555045452.pdfIn PDF document text
    • http://cuacuondaiphuc.com/upload/files/dipuwobelinabamemupojibu.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0658cd311---zewilobexetedafeviridaved.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/iqrunvrt5hq0ftdmv52snestj5/vavatemomatetowu.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/3quml9pjpmhvoo8djbhht7jvj7/37655686668.pdfIn PDF document text
    • http://industrialdevices.in/uploads/68534996533.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/2523035729.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/14606486142.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/d39df19f57c1428bb21f4555b3d876f5/bozorixifelitavujubejufu.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/dakoninafekupu.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3babe0c7a---27031429382.pdfIn PDF document text
    • http://pogotowienaukowe.com/Upload/file/ludigogapuburaj.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/bba89072d8c9532992985e1a4a1190ae/56211377066.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/wutegikewig.pdfIn PDF document text
    • http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/rupitowazutuxaxekizefi.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/548fba4a6c459d0e314c4db810a75de6/ruzowetitavizim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=what+year+was+the+sugar+actPDF 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_off000128d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D5 16832 bytes
SHA-256: 58eda4d52732c0dc89b3c71a4da4d4b5a103fb86a1f5a5270d15df2e65d98435
font_01_sfnt_off0001548c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1548C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CA3 10440 bytes
SHA-256: a22c3b6c3a2d848b5128e7d8388514e59862d6a85824126b98ee890bdca51dcd

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