Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab7a98564d63558…

MALICIOUS

PDF

85.6 KB Created: 2021-07-04 21:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 279c30b2382a5d5bad49d821ad7f577c SHA-1: a91aa34fe067b19b337e0af5bde1900927e799ca SHA-256: 8ab7a98564d63558074b818c35f9236dc09b4fc9237c72bf2a81df69600b440d
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI that points to a suspicious domain, identified by ClamAV as a phishing trojan. The heuristic 'SE_URGENCY_LURE' suggests the document attempts to create a false sense of urgency to prompt user interaction. While no scripts were explicitly extracted, the presence of external URIs and the ML classification strongly indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://smidgel.ru/uplcv?utm_term=ever+after+high+class+of+classics+read+online
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099157a7414a---ninujivefa.pdf
    • https://mides.vn/images/ckeditor/files/81639702852.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/ioe9bk6751gctovrtbeo8dci96/paxugugafuzalaf.pdf
    • http://sarlampa.ru/upload_picture/bivaf.pdf
    • http://phuquytravel.com/nguyenvanlinh/files/19367075742.pdf
    • http://www.euro-fly.eu/userfiles/files/waropubir.pdf
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/fuwot.pdf
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/9d59ee5975429704040e1228438c9ad2/pewewidajerikanekuwivoro.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/84c9ca154457c2bb08b32091dec1a331/351784022.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b63c5636e22---28057458989.pdf
    • https://maconlux.lu/userfiles/files/43383952841.pdf
    • https://carcable-bg.com/uploads/pictures/files/77955332688.pdf
    • http://adabaskimerkezi.com/upload/file/mokosijudox.pdf
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/0n7c3ima870jef9h44gr0m4kkd/gavekivefabifaxozala.pdf
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16080b1c5e23e9---lujeje.pdf
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/461c58a39937d7f5983ee0e77f1af602/53062490333.pdf
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/03d27020c44c30076b5becba34f42635/91489068508.pdf
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/v6kd6lobl4561i3hj846sjbl6f/dirurafoxowekugiborudafi.pdf
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/258599492347afd34d81f0e7fc6f9233/82777749880.pdf
    • http://brenna-ski.pl/userfiles/file/67370922782.pdf
    • http://jjinline.org/file_upload/file/mofafipiduputijilipumo.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_off0000eabb.bin
32130a7714cb428abeedd43b7bc683104f0669d52719768a2a18c9d72e7f571b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEABB 18040 bytes
font_01_sfnt_off00011826.bin
7453bc5e72a64f35b1101368144fbdba3c8ee5c94de233988749a0d5efbcee8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11826 10804 bytes
font_02_sfnt_off000130cd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130CD 16792 bytes

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