Malicious PDF — malware analysis report

Static analysis result for SHA-256 2609ba82a16cd7ce…

MALICIOUS

PDF

115.8 KB Created: 2021-06-26 07:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6810d41f79bd7c1b07986acf1270c0d4 SHA-1: 598e030217fcc25fe39a8cb0a3b7c8f6afedbbe1 SHA-256: 2609ba82a16cd7cebf20a534609142d6e8ae3aaa8604fcd117a8f8d9790e1cd6
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to potentially compromised or disposable hosting, indicative of a phishing or scam campaign. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into paying fees for non-existent prizes or parcels. The embedded JavaScript likely serves to further obfuscate the malicious intent or redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/tavanu.pdf In PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/656b8b64bc6fe83a9d77615fc527942e/5652327116.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/mijitupupizevuzebanezupev.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/b7kubjkqkpgno907iqalkdsbi0/16694533589.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b86d99209d5---noxiropinirewuwetutoki.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/jepudipipusajupolojile.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/qr4repgims4e44gd5d3g2mv7e7/33534570338.pdfIn PDF document text
    • https://noddy.nu/images/file/woraxunar.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607022039a3dd---61795644094.pdfIn PDF document text
    • http://vksraja.in/fckeditor/upload/file/76859024639.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/jr8sfvtklic163qkflh09vec7o/62384605063.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/5qnkd7tnfi48rj18edsr09r84m/paxefezi.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b43348dae0---zufuxug.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/wopopuviro.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/tuzubuxowut.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b94129d11c---zawigusiran.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16087bc975796b---53380523018.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/d37efe0559f171140e1fdcaebbaeab3e/57118389339.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/f632iuucqngj4lme4sdids37ha/63653155134.pdfIn PDF document text
    • http://globalcenterhotels.com/bot/ckfinder/uf/files/mivarepoxuxaz.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/b9d90ca1aa424a378d8488d7dcbd44aa/81731872096.pdfIn PDF document text
    • http://indianspringhomes.net/userfiles/files/vidakobiwoma.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160869e5c4de32---nupipi.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ad718479868---gumotevadelafa.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/da260d1433e68742f95532970e2d310d/90516490561.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=report+title+page+designPDF 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_off0001657f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1657F 10612 bytes
SHA-256: af05872f2ed517016b960b4168ad2886c335284728dc93992229184810798a64
font_01_sfnt_off00017d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D98 17236 bytes
SHA-256: 2df35d980a56ce18baee0e0795435ffb7a66c820e6b2832cb8de991fed1683f6
font_02_sfnt_off0001aa0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA0D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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