Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9807bfbd0b9d7bc…

MALICIOUS

PDF

93.4 KB Created: 2021-06-29 02:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 37ac6732719a37b6c76bf902ec0ef633 SHA-1: 91d6b5651ea6e1d80fdd2e4b98cdea978c962c85 SHA-256: b9807bfbd0b9d7bc4f27216b975067785d6ddc3f16b1170c18c8dbb29dca460d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains numerous embedded URLs, many of which point to suspicious PDF files hosted on compromised websites. The presence of these URLs and the overall detection suggest the document is designed to trick users into visiting malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/cuqp3a7kplna2rp41b3jql6foj/wimewogebez.pdf
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812ae50393a---birarivazekimasonoro.pdf
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/d89lfphtkcnphs4oktfqt173ul/82253863192.pdf
    • http://thietbiotovn.com/Images_upload/files/26690993242.pdf
    • https://goodline.by/userfiles/file/92664736575.pdf
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607922aa4526f---12509426489.pdf
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/r10vr27ui4tce28gv1eqkhnnro/15897269506.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a93018084---tonirobesu.pdf
    • http://ruresept.ru/files/file/femusurozarumatufusemini.pdf
    • http://hosungtour.com/FileData/ckfinder/files/20210527_9CADA74E289161E7.pdf
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607df3d25b1d7---dewuzexelugujabi.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927d005480b---46179237751.pdf
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/361e184e33a01d23eceb0cb0fba33466/busagonimofovupegaji.pdf
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d497f31bce---41344180389.pdf
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/c9e8f95op9ua2ts7ghsph30ur0/mokojesegevuvetu.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/62lplgrfte3cslsfhmp6r1i7i6/doxepolajebuxi.pdf
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/co2ae94or4le1v8ng9s17chjia/sivewipitunoguwifapido.pdf
    • https://akamercedes.com/images/uploads/files/17301412853.pdf
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/mhp47m1b5cq9dar0prh2mf2n29/sewira.pdf
    • https://saam.vn/images/content/file/16378792238.pdf
    • http://zrdb-drogbud.pl/Upload/file/kolaziju.pdf
    • https://travelstore.tn/userfiles/file/30968078145.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=numerical+ability+test+questions+with+answers
    • 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_off00010972.bin
2432cd41e343beccedc05870824ef16c24bd2c2a807d1eed87f5077e5c2764e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10972 17180 bytes
font_01_sfnt_off00013651.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13651 16792 bytes
font_02_sfnt_off00014e68.bin
c2b74271e072f944749b076f871910f0280be722fd028c9366d90a1abc08a647		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14E68 11060 bytes

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