Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ede5e583767cf89…

MALICIOUS

PDF

86.6 KB Created: 2021-04-06 18:11:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29eb9ca09828cfce3e73d201714a2a5c SHA-1: 8a5687c2e39cebd35dfa414ad228a6dadcaf0eaf SHA-256: 9ede5e583767cf896d2ead36aa0ab082c7fd54e1ead0a6ba17e6d03370648538
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a website disguised as a quiz answer key, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://xajibur.ru/wix?keyword=lesson+quiz+volcanoes+and+plate+tectonics+answer+key
    • http://tujubafi.getenjoyment.net/vamigatimisutazukudofo.pdf
    • http://gerda-msk.ru/how_do_you_open_a_stuck_freezer_drawer8jt87.pdf
    • http://bikokobolo.sportsontheweb.net/journal_atonia_uteri.pdf
    • https://zofumevovuve.weebly.com/uploads/1/3/0/8/130874077/sanejizezasevog_dalasujufona_futimajef_wuguduso.pdf
    • http://mitedujonajezed.scienceontheweb.net/kipugetefuvogaraz.pdf
    • https://xumizobizuzu.weebly.com/uploads/1/3/4/6/134688834/cef6aa3c5a.pdf
    • https://bibomezu.weebly.com/uploads/1/3/2/7/132710601/zonir.pdf
    • https://pefobasor.weebly.com/uploads/1/3/4/1/134131397/3950b279b0facb1.pdf
    • http://setokanekema.mygamesonline.org/8_quart_power_pressure_cooker_xl_accessories.pdf
    • https://jekosupoma.weebly.com/uploads/1/3/1/6/131637113/895792f13b3cd2.pdf
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/zokokokikum.pdf
    • http://lbaranaydin.com/suxanukh2aed.pdf
    • http://wamipivifubape.sportsontheweb.net/zuxusukiwudifamuz.pdf
    • https://mogewojelepa.weebly.com/uploads/1/3/4/6/134681452/1580914.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vulebodifoguvar.epizy.com/62481565677.pdf
    • http://wifofaxip.epizy.com/10801442408.pdf
    • http://luruloligof.rf.gd/62569709603.pdf
    • https://s3.amazonaws.com/fusopoxipo/bewupag.pdf
    • https://s3.amazonaws.com/wiwuxot/per_anhalter_durch_die_galaxis_film.pdf
    • https://s3.amazonaws.com/gozilum/amd_ahci_driver_windows_10.pdf
    • http://bulujulu.rf.gd/dialectical_behavior_therapy_diary.pdf
    • https://s3.amazonaws.com/sazixipame/94061644074.pdf
    • http://gewuruso.epizy.com/clases_sociales_definicion.pdf
    • https://s3.amazonaws.com/xijalovelokolep/wofurutelefut.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://scripts.sil.org/OFL
    • 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_off0000fedf.bin
c2643ff1889eee33ac107772b02d79931f5e6b9d107dffcd3fe90c803c04f8eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDF 5500 bytes
font_01_sfnt_off000111d0.bin
bcdd3a6cc730098ab98502ecbe095b1a070d6c21ff1a9cb7affa6adc9d5d8b8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111D0 10808 bytes
font_02_sfnt_off000136d2.bin
bf650122789d391e1ea673dd9761bc6ccc0f15b6f735ce6404682021461b6f1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136D2 16180 bytes

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