Malicious PDF — malware analysis report

Static analysis result for SHA-256 4096dafe89dffb64…

MALICIOUS

PDF

85.3 KB Created: 2021-03-14 11:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 247519f804915c3005a5950ed8726e79 SHA-1: 2bd6e5afd7be61ad8eadcd3e9347dd2ace9b86f4 SHA-256: 4096dafe89dffb6447b66e270c33ba586d6434c606383082fe887d5d75d3f18c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading malware or visiting a malicious site. No scripts were extracted, but the presence of the malicious URL is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/123?utm_term=pulsar+ns+200+black+hd+wallpaper
    • https://static.s123-cdn-static.com/uploads/4460694/normal_5fc8de066d1f7.pdf
    • https://cdn-cms.f-static.net/uploads/4449193/normal_6026f87eb4869.pdf
    • http://zefakelilivaxo.iblogger.org/46855626121.pdf
    • https://cdn-cms.f-static.net/uploads/4460706/normal_603a53e0be970.pdf
    • http://vagebunav.iblogger.org/campos_de_actuacin_de_la_psicologa_jurdica.pdf
    • https://static.s123-cdn-static.com/uploads/4464302/normal_5fceeca5abda8.pdf
    • http://dadosib.22web.org/91380700577.pdf
    • https://static.s123-cdn-static.com/uploads/4478430/normal_5fdfa200d05aa.pdf
    • http://fishing-rods2.club/mini_dachshund_long_hair_priceugb3z.pdf
    • https://cdn-cms.f-static.net/uploads/4501229/normal_60323327dab2c.pdf
    • https://static.s123-cdn-static.com/uploads/4413703/normal_5fef3f6f33e30.pdf
    • https://cdn-cms.f-static.net/uploads/4450042/normal_5fdae811ebb56.pdf
    • http://suporefebakibur.mygamesonline.org/hp_laserjet_1012_not_printing_windows_10.pdf
    • https://static.s123-cdn-static.com/uploads/4383794/normal_5fdf80b03e077.pdf
    • http://1xbet-registr.site/5401818350xc2yv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/libosokune/aplikasi_al_quran_indonesia_versi_lama.pdf
    • http://gazinuxifo.epizy.com/the_hound_of_the_baskervilles_movie_free_download_in_telugu.pdf
    • https://s3.amazonaws.com/dexodekelaseki/hanford_ca_water_quality_report.pdf
    • http://jesenetin.rf.gd/adobe_photoshop_cc_2020_tutorial_free_download.pdf
    • https://s3.amazonaws.com/nitizobuv/thanksgiving_coloring_sheets_for_middle_school.pdf
    • https://s3.amazonaws.com/nonipesikiri/medicare_online_forms.pdf
    • http://tizexazebubo.atwebpages.com/megajarisegek.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • 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_off0000eafb.bin
b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFB 6588 bytes
font_01_sfnt_off0000fb75.bin
4b66679ab18497b28499a785da884ebf98fd5c04279583ee7181ec89300f8ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB75 5732 bytes
font_02_sfnt_off00010ef8.bin
b6ad274dd81a3aeeb1d677c92fd7f0bc6e686f35116f084228c10ecaa3bbaa3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF8 10160 bytes
font_03_sfnt_off00013229.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13229 16164 bytes

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