Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca648b250b97df7…

MALICIOUS

PDF

106.2 KB Created: 2021-03-21 05:12:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9471d5c56fd67bee884553d27595848f SHA-1: 161cf62c6be0630c476dbb84412296a9983b20e2 SHA-256: 6ca648b250b97df7defb9a383b3a92cee6aff9adfeb0cabd29409a9ef8a66dbd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to malicious content. The document body, though heavily obfuscated, includes keywords related to movies and the wkhtmltopdf application, suggesting a lure to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://soxebez.ru/123?utm_term=movies+bollywood+2016++hd PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5febb86cba852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_600a4c9a8ec87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_6054aae9f30ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490366/normal_6041a14a19fd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421061/normal_5ff39d572063c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452624/normal_5fcbca12a94b8.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/69031781518.pdfIn PDF document text
    • http://fafikup.scienceontheweb.net/65381064116.pdfIn PDF document text
    • http://lariraduta.22web.org/kavotatozoka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374532/normal_6004a182b0be9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_6011192736fbc.pdfIn PDF document text
    • http://vetobiz.sportsontheweb.net/online_advertising_journal.pdfIn PDF document text
    • http://gitikirazidapi.medianewsonline.com/71521132694.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/scramble_word_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/5085654213.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/barracuda_email_security_gateway_outlook_add-_in.pdfIn PDF document text
    • http://sikabijixiru.rf.gd/41601009266.pdfIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_387cd63bb3aa47f9b99f92708dc60edb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/fur_elise_piano_notes.pdfIn PDF document text
    • http://widusop.atwebpages.com/34504476900.pdfIn PDF document text
    • http://koxikid.epizy.com/metabolism_of_ascorbic_acid.pdfIn PDF document text
    • http://kugezukakig.rf.gd/au_aw_worksheets.pdfIn PDF document text
    • https://4bc473c2-84d0-4913-8b4e-281bf44fba2e.filesusr.com/ugd/a25dbd_3f66f5b31abf4ad39d20cd14252217c1.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000137f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137F6 5488 bytes
SHA-256: f94d26e76cc036f161539b40b84a61b5b30b8c1f9d9402e5e7990b19564f6e45
font_01_sfnt_off00014acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACF 11188 bytes
SHA-256: 3cbb593f7be2c7ef5975d7d692a00dc7b05751e6921d7dd0b5f2ac134b02c2bb
font_02_sfnt_off0001711b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1711B 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
font_03_sfnt_off0001866e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1866E 5504 bytes
SHA-256: 73505a2d29323ab86b250e979df7970b7db83cd540b4978318cec59d7eca675c

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