Malicious PDF — malware analysis report

Static analysis result for SHA-256 09681b1119d9932f…

MALICIOUS

PDF

88.5 KB Created: 2021-03-09 07:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 022872d5277eb78830a0796c5f051592 SHA-1: 280863a2971109d409a060eadda4f47e75636b8e SHA-256: 09681b1119d9932f660a491f81bb0d07e2ecf65ebb025d0cd00277bd57fd4a17
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is flagged by heuristics as an external URI and part of a phishing attempt. ClamAV detection and ML classification strongly indicate maliciousness. The document body, though heavily obfuscated, contains text related to troubleshooting an LG washing machine, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=how+to+solve+ie+error+in+lg+washing+machine PDF link annotation
    • http://sungo1.space/business_flyer_templates_free_wordhus7u.pdfIn PDF document text
    • http://shopbest.online/nukenvwais.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/19060018063.pdfIn PDF document text
    • http://wobepatonogez.iblogger.org/47252698481.pdfIn PDF document text
    • http://wawepeb.22web.org/bivuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dupula/lotopikivimewufujusas.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/tamilrockers_tamil_movie_free_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/tik_tok_video_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/surumuxetif.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/adobe_reader_10_free_for_pc.pdfIn PDF document text
    • http://dujefukuboxus.epizy.com/jamadade.pdfIn PDF document text
    • http://mugofunuwutav.epizy.com/bujebulob.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/96849900930.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/prayer_for_the_betrayed_wife.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/2410999574.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/what_time_is_walmart_black_friday_sale_start.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/kadesifixekezibesibopasib.pdfIn PDF document text
    • http://jelunegizubu.atwebpages.com/honda_rancher_350_carb_tuning.pdfIn PDF document text
    • http://wobosososozase.epizy.com/best_free_browser_games_no.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/lenovo_thinkpad_t430_user_manual.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C9 5328 bytes
SHA-256: 600121180a0f4d5bbc1b700e3188343e4ca7f7ad7865ac9351243955e9f23d71
font_01_sfnt_off000119d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D1 10760 bytes
SHA-256: f712f45b995e64adee214c54adadff5286b0ce13a216202eff229b5a9c23a5a3
font_02_sfnt_off00013e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E90 16148 bytes
SHA-256: 51babe3b44e703ca5a92278b053c112c5c116674d3b708c8e2cb3e4aa6bd9a04

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