Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b9f41b0505fd93…

MALICIOUS

PDF

370.9 KB Created: 2022-05-01 14:54:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: cb4adc0e2b6a04c67c9e61fc01da4530 SHA-1: 6e23d60f7ed14d94f1d681d907d9a7b3c0929b42 SHA-256: e9b9f41b0505fd93786fa09141a1986b3f01ebac3219b84a4c01ad54ffe3224b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing lure. ClamAV also flagged this file as a Pdf.Phishing.Trojan. The ML classifier further supports the malicious nature of the document. The primary attack vector appears to be directing the user to a malicious URL for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6924

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://lovig.co.za/XSRYdR1H?utm_term=tipos+de+cardioplegia+pdf
    • https://tumulole.weebly.com/uploads/1/3/6/0/136054957/senaluluzupibixajo.pdf
    • https://kisupumusu.weebly.com/uploads/1/3/4/5/134513531/e1637619b2ca.pdf
    • https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/1951413.pdf
    • https://dreamscapes.ca/dream_scapes/userfiles/files/nuxabovadudusukavenejib.pdf
    • https://kezagoguz.weebly.com/uploads/1/3/4/1/134131769/1925662.pdf
    • https://dixitelenamipum.weebly.com/uploads/1/3/4/3/134380202/badolezanalirupeke.pdf
    • https://sujetobanep.weebly.com/uploads/1/3/5/3/135337497/3063829.pdf
    • https://dafavazama.weebly.com/uploads/1/3/4/8/134893815/kadezanaboduxup.pdf
    • https://mirurilusenut.weebly.com/uploads/1/3/4/6/134631679/kapijosito_jonul_xolez_penizal.pdf
    • https://mofafodoler.weebly.com/uploads/1/3/0/8/130874416/b606edd6a.pdf
    • https://garigewofunem.weebly.com/uploads/1/3/4/3/134314314/setazonufofatiziwe.pdf
    • https://aeronautike.com/userfiles/file/69188139165.pdf
    • https://busaluvugisegiw.weebly.com/uploads/1/3/4/3/134368440/9206660.pdf
    • https://xuvivodoxanujo.weebly.com/uploads/1/3/5/3/135308848/331666.pdf
    • https://stdtekstil.com/upload/ckfinder/files/84658329421.pdf
    • https://zumokijux.weebly.com/uploads/1/3/5/9/135966910/0731d026.pdf
    • https://dilozerekake.weebly.com/uploads/1/3/1/4/131452754/f93bce6e0bbd2.pdf
    • https://feruzizujuvete.weebly.com/uploads/1/3/0/7/130775768/kodumovedik.pdf
    • https://ikayros.com/app/webroot/upload/files/gabosaza.pdf
    • http://manhremhoangvan.vn/wp-content/uploads/files/bisugebegujasaripubena.pdf
    • https://narefipikabisip.weebly.com/uploads/1/3/2/6/132682930/norixijod_xipegajilagi_dosunidagele_mejix.pdf
    • https://ibextrail.com/editor-images/jizesapafisejofiperal.pdf
    • https://sefedajexoxoj.weebly.com/uploads/1/3/4/4/134479396/9520164.pdf
    • https://lensmam.com/userfiles/file/pobijajavoniranobezadi.pdf
    • https://sidazogifixav.weebly.com/uploads/1/3/0/7/130775719/nipotufebopowa.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_off000557df.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x557DF 16792 bytes
font_01_sfnt_off00056ff1.bin
6fb658799d0759750d69523bb1b0248e8f7bbefdf52b1f1e5a1739b5c7145942		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56FF1 20204 bytes
font_02_sfnt_off0005a412.bin
0e42ae8925e8064dd563b1d487097dc65531c6d20773760585f8029e04610151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A412 10556 bytes

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