Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba373b6d98790d1a…

MALICIOUS

PDF

85.6 KB Created: 2021-06-29 11:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4f783e1228298e962cbfefd9f3e8434f SHA-1: 48793f1075442cb8c86c5d721591eb1253ac9c18 SHA-256: ba373b6d98790d1afe81ad5529b9e7c731786a38f3e4828427e07213f1e75f89
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that redirect to external sites, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with techniques used to deliver malicious content or redirect users to compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://asthasupermarket.com/userfiles/file/13168518715.pdf
    • https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8082d20d8---94035770131.pdf
    • http://ingenermarket.ru/userfiles/97372142624.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071401268fde---mufofutiwar.pdf
    • https://handientu.vn/userfiles/file/gujisubolidivekevisuz.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/fc8vpmg8mm7cc4uopfbs054rc2/63974014719.pdf
    • http://allseasonsart.com/uploads/fck_uploads/file/73077951426.pdf
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/seulhc77b88ncm6v62fv3aamh8/nuzevegumimesuvewigi.pdf
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/609ee30307ec3b9a1e36bb79e9e44842/32783480268.pdf
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/1l7go3qj5shcb9scsmskmn76e1/74653957989.pdf
    • http://hebammenglueck.de/ckfinder/userfiles/files/vavuvafumulasiven.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16081912aaec91---kanibebubavonisit.pdf
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607035353ca43---nefugisijepewononafopudev.pdf
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/bf0f44c7fff32800cf79532ac2341c60/nifiweneporigo.pdf
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160758f782f92c---75918891343.pdf
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb2abb6648---32625900209.pdf
    • http://autoshiftbid.com/fckeditor/userfiles/file/82471395813.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608293c81487d---gekefutiruzumujesirasupe.pdf
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/469c2a637987178d239fbbca351b26ba/98301069230.pdf
    • http://staractivecollection.com/resimler/site/files/75461313904.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/cebc9367b9e88f331e3ccb6c74a1fa06/4307064079.pdf
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1609f83f3f3f08---vuvaxasi.pdf
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5d43af659---pepuzo.pdf
    • http://nordicaluminium.ru/userfiles/file/noxalegezulozozusa.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=sour+mouth+after+eating
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off0000efb4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 16792 bytes
font_01_sfnt_off000107cb.bin
f05aa4ad0f4c41089464fb332bca24696622a33f96d1bfd20e0b25943496315c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107CB 10620 bytes
font_02_sfnt_off00011fed.bin
f5a387d169335e966626d060b51a4f825feacacad39b8a9eb541e45b2cc45f5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FED 17700 bytes

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