Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc4a81d240ff047…

MALICIOUS

PDF

74.6 KB Created: 2022-05-03 14:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: bd1bf3402a1a687f7399a936e6d30080 SHA-1: 5cffef686b87d80f156593ae88e5572876e6d18c SHA-256: afc4a81d240ff047d4a0cd96ad801f9a1e72e3ec2c426222b97a6117bfd9468e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI was found pointing to a suspicious domain, suggesting a phishing or malware delivery attempt. No scripts were extracted, but the overall structure and heuristics point to a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://cafij.co.za/YmrXLWy8?keyword=letra%20cancion%20dejame%20que%20te%20cuente%20lime%C3%B1a
    • https://kabelkyaobuv.sk/editor_uploads/files/90710584361.pdf
    • https://pegujerexiwusi.weebly.com/uploads/1/3/0/8/130814209/toxesugan_gufonofuxur.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/c7f46cc9700989abf583cbce92ebee4d/xomubejerelugonak.pdf
    • http://abdobson-new.simplywebeditor.com/site-uploads/91345168315.pdf
    • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/xuxezetizepu.pdf
    • http://palyavalaszto.hu/teszt/upload/file/2399594702.pdf
    • https://xefixosusivepik.weebly.com/uploads/1/3/5/3/135392558/8318179.pdf
    • https://nikalakikezune.weebly.com/uploads/1/3/4/7/134753818/8449d4cf085.pdf
    • http://www.serge-valentin.net/ckfinder/userfiles/files/21962132115.pdf
    • https://jotisevixenitu.weebly.com/uploads/1/4/1/2/141258578/gabotejefowul_tumux_nanilegixek_texabisaneko.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621513cc2b881---juwuzakaviwotilete.pdf
    • http://www.boonjit.ac.th/backoffice/ckfinder/userfiles/files/keduwokanoboroli.pdf
    • https://zulevoto.weebly.com/uploads/1/3/2/6/132696122/simajejaxuvog_kemiliwoted_pobobijanololud.pdf
    • https://kejopawilut.weebly.com/uploads/1/3/4/7/134709951/xiwaguxuj.pdf
    • http://etoprosto.ru/ckfinder/userfiles/files/daxoliwewapabameziful.pdf
    • http://omegabg.net/media/ck/files/lomazibuzogitalinikoxa.pdf
    • https://pobowapikojuga.weebly.com/uploads/1/3/4/9/134903403/69a5c.pdf
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/162018335f2a85---41777286932.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/162433c481cf17---menulixevugoz.pdf
    • https://kokobeze.weebly.com/uploads/1/3/4/6/134605009/cf78c3d5.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_off0000bbdb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDB 16792 bytes
font_01_sfnt_off0000d3ed.bin
56801ee7814530647e359a1067afddbee26c2b58f5436e6afcd2426e68674599		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3ED 17940 bytes
font_02_sfnt_off000100a8.bin
fbaff9f901a83180c1a84e80b34769a682e50d80d37f31326720f0620d220401		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A8 10904 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.