Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd03b60d5ebdecf…

MALICIOUS

PDF

144.0 KB Created: 2021-05-06 04:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3cf550022c73245486afb341cb3862 SHA-1: dd618a171af8cfec40a8fb4ecb5a2882ece31ca4 SHA-256: cfd03b60d5ebdecf64bc3f7c0d02a2a8590d0b8807ad11c739ea800821e6688a
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to malicious domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Dante's Inferno Chapter 3 Summary' to entice users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://xezojetit.ru/strik?utm_term=dante%2527s+inferno+chapter+3+summary
    • http://spain50off.info/5389389981122yfq.pdf
    • https://cdn.sqhk.co/sozodumupof/gc0XXYT/58504004705.pdf
    • http://risonubokedoxav.scienceontheweb.net/86388513984.pdf
    • https://cdn.sqhk.co/vobevufubito/7Ef5qhd/packers_game_live_streaming.pdf
    • https://cdn.sqhk.co/zuzudumijamo/dsjcPjb/slideshow_presentation_maker_free.pdf
    • https://cdn.sqhk.co/kivipemo/uhaPgjX/fire_alarm_testing_report_format.pdf
    • http://prodson.fun/its_called_a_breakup_because_its_broken_audiobook68s2c.pdf
    • https://cdn.sqhk.co/gulanuwe/f3uX8E2/fbi_open_up_button.pdf
    • http://all-system7.xyz/6430686728872ypq.pdf
    • http://mailedflkf.site/sapo_y_sepo_un_ao_enteroqvjy1.pdf
    • https://cdn-cms.f-static.net/uploads/4381090/normal_5fdc8075b5c0d.pdf
    • http://perevod-card2card24.site/asus_android_driver_for_windows0mwm3.pdf
    • http://mamubisuk.mypressonline.com/up_board_class_8_english_grammar_book.pdf
    • http://1xbet-sportstavki.fun/baby_lynx_cat_petlmicf.pdf
    • http://shimano-stradic.ru/sat_test_dates_2020_and_2021mdy5y.pdf
    • http://salleop.xyz/assembly_language_8086o2beu.pdf
    • http://proita.fun/diferencias_entre_los_animales_y_los_seres_humanose9oga.pdf
    • https://cdn-cms.f-static.net/uploads/4454045/normal_6023b1899c056.pdf
    • https://cdn.sqhk.co/mesafovojifo/jgjebmv/acero_inoxidable_definicion_y_tipos.pdf
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5fdae03cab019.pdf
    • https://cdn-cms.f-static.net/uploads/4379220/normal_6053ef99acc00.pdf
    • https://cdn.sqhk.co/fexilejedit/vpjgP3h/jirexikuvozigeziru.pdf
    • https://static.s123-cdn-static.com/uploads/4501229/normal_5fcba023d5dfb.pdf
    • https://cdn.sqhk.co/bexefoboxevi/hfGRhjU/small_business_startup_cost_calculator.pdf
    • http://bewewafip.scienceontheweb.net/book_review_template.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://muzulozak.atwebpages.com/wazavaxeju.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f783.bin
f678a1f2f6efcd257084db9e2ea7b4f5cc88caed0cb66525397e033143826578		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F783 5520 bytes
font_01_sfnt_off00020a39.bin
a54e0194f6f7c1047c7b82502de88a2f0fb3d5dfcb3f2aa406b4c9c553791057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20A39 12444 bytes

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