Malicious PDF — malware analysis report

Static analysis result for SHA-256 6015822243f7caad…

MALICIOUS

PDF

69.9 KB Created: 2021-09-27 06:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: a3016ea9d281c835b997bfafa4d0f2bc SHA-1: fe79eb110d7a9540c13ac0ea71a38521c8f27514 SHA-256: 6015822243f7caadad80df5ceb4fb195aea62809210769ad0977f4ce9b50854d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The presence of numerous external URLs, many pointing to disposable hosting and employing UTM parameters, strongly suggests a link farm or phishing lure designed to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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://wastran.ru/uplcv?utm_term=action+game+best+fighting+games+for+android PDF link annotation
    • https://angkoronetour.com/userfiles/file/23589363645.pdfIn PDF document text
    • https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/zoxipowuraxunawofafubomaf.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161482270c8317---96591734709.pdfIn PDF document text
    • http://dreiseengrundschule.de/files/95314737692.pdfIn PDF document text
    • http://baheth24cars.com/ckfinder/userfiles/files/98243219689.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/8f4f1effb7807b46ad5721e86d8391c6/fasojov.pdfIn PDF document text
    • http://camberwelltaxi.com/survey/userfiles/files/40831959148.pdfIn PDF document text
    • http://nhatrangpalace.net/app/webroot/upload/files/xivoxefabaxovotaxuga.pdfIn PDF document text
    • http://kwiatmetal.pl/userfiles/file/53725181.pdfIn PDF document text
    • http://delta-serwis.pl/pliki/84620304910.pdfIn PDF document text
    • https://xetnghiemadndanang.com/upload/userfiles/files/mufutazevisenogunala.pdfIn PDF document text
    • http://4darchitecture.org/img/all/nalijase.pdfIn PDF document text
    • http://reyazahmad.bscsaoner.in/ckfinder/userfiles/files/kiwugar.pdfIn PDF document text
    • http://101eyewear.com/luutru/files/91937847455.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/54675153761.pdfIn PDF document text
    • http://newo.ru/files/files/xomejekavezemoxela.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/fifeputadozikesavu.pdfIn PDF document text
    • https://trisyscom.com/userfiles/file/xitit.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/nitoper.pdfIn PDF document text
    • http://bebsulmare.com/userfiles/files/59978748718.pdfIn PDF document text
    • http://foxadv.net/file/48094487115.pdfIn PDF document text
    • http://www.bargiel.com.pl/ckfinder/userfiles/files/fuxebajarosife.pdfIn PDF document text
    • 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_off0000ad42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD42 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC559 11000 bytes
SHA-256: 728035e546ae46e46d7bccaee88941a09505e5fb7f01a9c7609838bc4c5c8800
font_02_sfnt_off0000de88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE88 16532 bytes
SHA-256: 78a6fe47979b5a3f71455a54abd66fa6bb007ded5f2d11ac092df85ca4e3dc91

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