Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e9ae0cad461f7c…

MALICIOUS

PDF

91.9 KB Created: 2021-09-02 10:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 0eb7a14f9cdad386912ff647098a0147 SHA-1: 420e361904c49e8e61bc5f74bcc0c3beb7f2099c SHA-256: 95e9ae0cad461f7c3acc3b7f4350bfae7e715949b3f9785a3765001213a6453a
156 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites, some of which are hosted on compromised WordPress installations. The presence of these links suggests an attempt to direct users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/92545274813.pdf In PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16074c87e29653---milexikatozozaw.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/4206ca10aa9e155ed603e7f296967b9d/28763398177.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b23a7304cac---nelenifiramopuloduviviv.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/d6df5f36adab49d42c8b4f4dd9191253/soriwasixajubajasozefaxip.pdfIn PDF document text
    • http://familiehollander.nl/images/uploadedimages/file/kazexewasufoso.pdfIn PDF document text
    • http://usarsenal.it/userfiles/files/jobejewozajudifowolipibo.pdfIn PDF document text
    • http://phuvuongcorp.com/luutru/files/sotarat.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/80511410010.pdfIn PDF document text
    • https://ryokanclub.com/FileData/ckfinder/files/20210705_CBD2AA93B3EC29BC.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/c45f34bada8909ce9e05918ebba60cf5/zavusurufetimejowelizate.pdfIn PDF document text
    • https://iveducentar.com/uploads/assets/file/rokinanonodosajuso.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/23cfk3p9ijfnrfcrfpvrlp40h5/xixuvoluja.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/6b0d139c710128d06df767284cf37313/lipogidefuwukijosawoneka.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/fisuxagewekaporiko.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/7856492517.pdfIn PDF document text
    • http://yugang360.com/upload_fck/file/2021-8-21/20210821175251590442.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adf26ad8e0b---witezudepijirug.pdfIn PDF document text
    • http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/todabapezererabufekefu.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/pl8cums1k0a6ir4446qjqthdqr/rojozemavowirotilalotibel.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/aful5coe1k2s29h4bfqh7n2hb1/84997421201.pdfIn PDF document text
    • https://locktactyuma.com/userfiles/file/kuxesojoxen.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=all+games+unlimited+moneyPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000118e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E6 10688 bytes
SHA-256: 1b9a7a4e46a03033052a624a13be61beedff69eefe0a4b7baaa62a7d8b2ebc1e
font_02_sfnt_off0001313b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1313B 18728 bytes
SHA-256: 949627c7a270956e7463fc0ada39391c21879908cea6febfba8775276d18b8f8

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