Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6cc2ea2d57b775…

MALICIOUS

PDF

93.8 KB Created: 2021-07-04 15:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 87e9e339cc4bc8286f09544944ce6a6f SHA-1: 940ef5f9b0855750db74c4dd5bd024c6567e832e SHA-256: da6cc2ea2d57b775a74abf6582d6b99d14c8c46adc04af980ed06345533857e0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'pistant.ru' suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://pistant.ru/uplcv?utm_term=fulbright+interview+questions+and+answers
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9c93e1f83---43804968557.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8151c00c4---38436680954.pdf
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b31357bbc---72971888815.pdf
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b67e83f1440---16892980101.pdf
    • http://syarmarka.ru/userfiles/files/veriwudoxawosipiw.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/16306fdba9371e7bcbc005287b6b92f9/kakaliwevajixuzib.pdf
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/5d83081ed58f30f84d91987630c9e693/69730255152.pdf
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d20a1154a1---kilelibidapi.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc1eb570e6---nubozobiputazeworik.pdf
    • http://bnblspecialities.com/userfiles/files/61137036667.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/99001148679.pdf
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e4d64dcfa---77637356975.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/1b9642a25e4205932faae087d7952ce3/batukimuseziga.pdf
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/710cd2402d84af1dfda00823f9df13e8/28568369605.pdf
    • http://interiorconsignments.com/media/file/rabinokujipanuwezibiniro.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/0ff68d90512ed6a7750c2e92ef890df6/luwadidiremonob.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/6dee310a8925d14597aec7063685e331/16055081563.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160afc40c1738e---motapojeteferedunaxona.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac4724bcd7---loxawiwifasa.pdf
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606db45eb7f26---wavujipotilulade.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/c2058c1eda4c9a659adb9fd6b87d2f2d/26089463862.pdf
    • http://ahchala.com/img/file/gidujalukubojofefopoto.pdf
    • https://agentcctv.com/userfiles/file/zuruxiwufukuvo.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_off00010a06.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A06 16792 bytes
font_01_sfnt_off00012218.bin
aa821a3da4a716954fca90f4dcc473d1404a030ac9ab9a5c2a2e3943b4418e6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12218 17636 bytes
font_02_sfnt_off0001508e.bin
822cad254e4020e08bcaaa391030e66874820707ac4c0b63eeee5fd99f0f48b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1508E 11044 bytes

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