Malicious PDF — malware analysis report

Static analysis result for SHA-256 71716e718b04f5cf…

MALICIOUS

PDF

111.1 KB Created: 2021-07-01 00:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 238afad6de99d8a11e881bb1805fc0a2 SHA-1: 324b8f3c45766ee73567008923cde3455cebc57e SHA-256: 71716e718b04f5cf42db093978f12d5b9625e97db9fa83ba5d70b2eacfba9c9d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, one of which is disguised as a link to a sports psychology book. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs point to potentially malicious PDF files hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/0894mstim2n9uj2iu2cl4qs431/38821368479.pdf
    • http://littlepearlspublishing.in/data/eimages/file/34930173936.pdf
    • https://netshopnepal.com/userfiles/file/27675355624.pdf
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/2ad8026fa36b3d3b63860520c5bc0387/nozidokoxujewokim.pdf
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d2d181e65---vefureneg.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/75866b8e13e320aab42fb89aa2f6bb61/78533713186.pdf
    • http://geredekombiservisi.com/userfiles/file/78273197870.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca39571617---41159046731.pdf
    • http://omak1968.com/clients/71178/File/bivasuzuvosekulemuwureve.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ackb0jcd157psv912avg8iqqb6/72370883332.pdf
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/6fca408616f640296ebfb19af381d3b9/33277062146.pdf
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/8aeaad2ec70a60e493793593f23f6dbb/pinidukejarowubokasufogo.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160910b8395159---84507578979.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a58c16350d9---dagoru.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/24233247105.pdf
    • http://anhbanglaw.com/userfiles/file/jorometevo.pdf
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3700ebe92---vawizeduzita.pdf
    • https://maximatrimony.com/ckfinder/userfiles/files/34785165365.pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac677e64fc8---furuwebote.pdf
    • https://akproauto.net/nbloom/fckuploads/file/vediluzenixiti.pdf
    • http://say-international.eu/userfiles/file/7063809267.pdf
    • http://www.jobsincrete.gr/images/_user_na/file/79681674222.pdf
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/4b266f4a12573538957caf2031a8589e/83527094937.pdf
    • http://agnieszkapawlik.com/userfiles/file/34576950371.pdf
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/fb28d14a530263abd970eefc4dd6be54/61259177582.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=sports+psychology+and+sociology+book+pdf
    • 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_off00014f24.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F24 16792 bytes
font_01_sfnt_off00016736.bin
895579c9d138793264429b9765bc6c02e4bbfd8905b99f558d71a4979f5d79ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16736 18260 bytes
font_02_sfnt_off00019539.bin
8b6f213cabf2a4c926f05ac3aa6c432166e84e0ac0657307b2bce91fe99317ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19539 11188 bytes

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