Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c2380175e2c3be…

MALICIOUS

PDF

195.5 KB Created: 2021-07-20 08:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 176e3e6ac1be5baccdff28db48901279 SHA-1: 5007610ab34bf78f1f071732a9743dca5fce6376 SHA-256: 30c2380175e2c3be11ee07263a5bc62ed8c580a13b648317cec7cc9efbc737fb
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous links to compromised websites, likely intended to host and distribute further malicious content. The presence of embedded links and the nature of the heuristics suggest an attempt to trick users into downloading a malicious payload disguised as a PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9726

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607590c47596a---tuwapuxavemudumoxevi.pdf In PDF document text
    • http://davidhammerstein.org/userfiles/file/vavorovojevumelaferizuruj.pdfIn PDF document text
    • https://mk-promotions.com/ckfinder/userfiles/files/99810564085.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608607ac91714---60740284338.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/dojepinobolet.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/f4503e88c98e427a3ebb7ce1f2feccc1/gibunapubanajomumizu.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021062004100773499.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cbfea9e9e---50174251850.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/35d428a438a1d4a07a35ece8ee3b54fc/65679833239.pdfIn PDF document text
    • http://pphjako.pl/userfiles/file/pefafegiwuderavupasaku.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c79f2c30368---41072902948.pdfIn PDF document text
    • http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/vimugivewasolebiwidej.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/ebdd514eab56743f32a70b9fa88ea293/zikuvemajavusaranuz.pdfIn PDF document text
    • http://www.greenbriarpropmgmt.com/wp-content/plugins/super-forms/uploads/php/files/c721e7c6efb741c4dbb188d945506a28/kumotulekodumexis.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608802c01d978---kugosoxitifem.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b21fb035035---94859030588.pdfIn PDF document text
    • https://gregor-biffiger.ch/userfiles/file/11781023990.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160f6442220502---fegatomuzuxivu.pdfIn PDF document text
    • https://ckmandarin.com/uploads/vimagedorapopix.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/27545407334.pdfIn PDF document text
    • http://menloathertonhigh1980.com/clients/6/6f/6f83464fe0b13873896cace574d4baa5/File/wegeg.pdfIn PDF document text
    • https://aashianarealty.com/file/xobalezavamag.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c86319c19ef---16934233584.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=surah+waqiah+in+which+parahPDF link annotation
    • 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://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
stream_006_off0002bfa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BFA4 36180 bytes
SHA-256: 9b6aaa1ef9825fda42093ab0196ebe8df81ec3a69fb2bf65966348133af23330
font_00_sfnt_off000263cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x263CB 17224 bytes
SHA-256: 57025bc9727e512d2adb9ecd50eb905ed24404269ee05a2b756e7c14cbf9610c
font_01_sfnt_off00029061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29061 10312 bytes
SHA-256: aeb3653e17fe08b307d78918c993f8d6265207a08758b1ebee9f2f3361b8bc98
font_02_sfnt_off0002a793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A793 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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