Malicious PDF — malware analysis report

Static analysis result for SHA-256 43149568950be4e9…

MALICIOUS

PDF

100.4 KB Created: 2021-06-28 01:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 79530fca10ed571e7d2753d745564e79 SHA-1: 59e677a2df564e8125746ca6fae5632e21dbddaa SHA-256: 43149568950be4e9b2a081c5428c62af7d0f1b5c145a32a7dcad3dc5823bfa2d
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. It contains an embedded URI pointing to 'https://catamma.ru/uplcv?utm_term=rotate+video+on+premiere+pro', which is a strong indicator of a phishing or malware distribution attempt. The presence of numerous other PDF files hosted on various domains suggests a campaign distributing malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://catamma.ru/uplcv?utm_term=rotate+video+on+premiere+pro
    • https://stmarys-perthamboy.com/upload/File/9805012167.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609891c0a4c8c---bilageded.pdf
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/6de3a045af1645572b8a2b07fa22834e/91773092433.pdf
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b43e0686a---83468764777.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1edd98d3c---lekudekuvajutu.pdf
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a5544a722---49706365471.pdf
    • http://ifa-astrologie.de/userfiles/file/werigepaza.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/9c0d0a64bf928fb528cb66c91c17be02/kiwesavetebezonebotulas.pdf
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5d0b0212d---16173865292.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077fed6b44a2---68264412699.pdf
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/b2b547c48d0429da1ce76b24aed70f09/boxewoxesazijarafalizadut.pdf
    • http://seamcc.com/UserFiles/files/ketezafoxelujaxixidaj.pdf
    • http://nhadatv.com/webroot/img/files/povukejilejebases.pdf
    • http://beerskiboot.com/img/upload/file/27829277811.pdf
    • https://commonwealthsportsawards.com/userfiles/file/ziwitole.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa1f96025b---liwolulutegawiridodegilas.pdf
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/61c259ddf6c239c13e3c2c32524963a7/43750752991.pdf
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/cdcdd89897936c4acd3eaac873b4691a/50440201516.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba2bd0d8b11---geledovo.pdf
    • http://all-pass.com/folder/editor/file/57512485379.pdf
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/48dd25c474e2b0afd4660234c6538673/ragufasizukavefedo.pdf
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/1a8fa1b264589ba667671953ede70c4e/67104210236.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c633606a08d---zagigomogivoxasitaxevoger.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c2a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2A 16792 bytes
font_01_sfnt_off0001243c.bin
64de868469925ed39c83bf74e7715b3bdac34c1d8da6118844c9b8d550f10d1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1243C 19776 bytes
font_02_sfnt_off000156d8.bin
afac2f70e72736b4b18f7fc53bd43b7003cb1dc7c077d016d36afb74b1042de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x156D8 16096 bytes
font_03_sfnt_off00016c23.bin
f4f9f2dcb02bd0a6b7cf130ca87855312191ed82f70808c90679d468929d7f60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C23 10452 bytes

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