Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6ee6f24cff3b3e…

MALICIOUS

PDF

87.4 KB Created: 2021-06-30 04:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b85789c6097d657a685fd15a7a44cb7c SHA-1: 5a2edcafcde38776952c8a927c31eaf955af8887 SHA-256: ad6ee6f24cff3b3e3b52bee462aa0d3b38dd3664f3a4bbd31ce0c5b793f91f60
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, some pointing to suspicious PDF files, suggests a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF format often utilizes JavaScript for malicious actions, hence the inclusion of T1059.007.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5777706e493ce9492d2a51313279903c/perowitosebadojekujesaguw.pdf
    • http://chongthamnguoc.vn/img/files/kelotawobu.pdf
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/148ac5185a11f510d875a3e7f2a377d1/90319686385.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a15bbcaf014---76756725630.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ecf10ee96---beruxipaveserimivujew.pdf
    • https://techson-cctv.com/upload/file/35491722922.pdf
    • https://premium-house.uz/images/file/nejisutetowi.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/m030ftgc69o3l1cub3rjdvfb1c/peviroduzadenojogetivu.pdf
    • https://weeb.nu/userfiles/file/76279213447.pdf
    • http://seanbittinger.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/994586313.pdf
    • http://jikaramen.com/uploads/files/debomovugafoter.pdf
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/86e9634135ecd91e8dc5020595bfdfa8/vizixa.pdf
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/jschr9gi4k9km168l1qv5lkq34/zinosebisov.pdf
    • http://janatalnajaf.com/basefile/janatalnajafcom/files/samoketezovex.pdf
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16079bd378669b---bamugikemapanigiti.pdf
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a780649d45a---fedevamo.pdf
    • http://webursitet.org/Files/file/77372109836.pdf
    • http://quickvideo.nl/userfiles/file/buzaweronisade.pdf
    • http://www.advokat.com/app/webroot/img/fck/file/zubivakegur.pdf
    • http://shsclassof1959.com/clients/a/a7/a7a82b2a6025f7fafce5d77be70bf845/File/87166267721.pdf
    • http://logistra.fr/ressource/site-image/files/dapademobefe.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb86795344e---59502373290.pdf
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160973360d2181---mixenaruxaporokosijenimot.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/238beaf0497422930e7e6b9b722acde0/59149770998.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=going+concern+frs+102
    • 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_off0000f5c1.bin
dbb947f04b3003e7e62c4edee0651d96f3f389c37f688a966e4fab82f648d966		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C1 16368 bytes
font_01_sfnt_off00012023.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12023 16792 bytes
font_02_sfnt_off0001383a.bin
bb088438a126c669ccdef9e20112a394498631672bf37026d1e39967669b3925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1383A 10536 bytes

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