Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b20d00a8f5839f…

MALICIOUS

PDF

107.6 KB Created: 2021-06-26 00:15:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a0674fd91d68c77f94b20681596ccfa8 SHA-1: bbf8dcf7169b96e63444e38133a37fdd23205057 SHA-256: 27b20d00a8f5839f0e474c3991ba1ac55a55aea9547b62393c4658584c57d94a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links, many pointing to potentially compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure indicate an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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 https://hostingalani.com/calisma2/files/uploads/27574304441.pdf
    • http://fonnepal.org/userfiles/file/85929541199.pdf
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/34c0a31711fce5381a3a594abcc009a7/63173411979.pdf
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/9eflo3i1kfhrpeec9ku9j9tnjd/31853777975.pdf
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160cd022512dbb---59620998491.pdf
    • http://kayapaliinsaat.net/file/jipawiro.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/763c01cde9db004e7b17f26f85c60b26/36309938359.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089241fc711f---bakuxubodibuzetavutexef.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c092f098370---mebaxapugelexurelifus.pdf
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/932d600673dd50153c999849d355caaa/58790779044.pdf
    • http://dedanskecasinoer.dk/userfiles/file/felizimofuwosisefekopatu.pdf
    • http://wirheiraten.de/images/file/52487627495.pdf
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b4b788ac6---vajexerixesibasani.pdf
    • http://technoculture.cz/admin/upload/file/78708149866.pdf
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b967bdf7ce---lizefewolupe.pdf
    • http://indago-rovigo.it/userfiles/files/86468671978.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/rabfcv3ljgpe778bn3bv7m5vve/fifovuwipodew.pdf
    • http://nusratali.com/userfiles/files/11717853822.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/guos7qbcdi35bs9iqvvrtqtkd6/28542933377.pdf
    • https://dallaslandscapedesign.com/media/files/gadudifoni.pdf
    • http://nomaquito-travel.com/editor-images/73759937663.pdf
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/d60d5a7a004632a97bdffdda4d91970b/zevavomafukixukebozufin.pdf
    • http://alumcity.ru/userfiles/file/78858040010.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b768c9ffaa---25706766847.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7cedd022a---42267205285.pdf
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607837d685ca4---suzexujisiteka.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=things+to+do+in+point+judith+ri
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000141aa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141AA 16792 bytes
font_01_sfnt_off000159bc.bin
2b7a118e821e68ad57edf0454a78431ef9461706a042e0f11a64cd6e516da487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x159BC 18176 bytes
font_02_sfnt_off0001897e.bin
2b8006f220ababe7ce3794a72d31b4fac88010433b32fefe511d2f5c77f72614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1897E 10524 bytes

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