Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e41a95bd1ebe6a5…

MALICIOUS

PDF

78.3 KB Created: 2021-03-24 02:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6254ae6280cb3128d63181d87b2f698 SHA-1: 784c1a95a7a87e6c6e86f5aefef9185190063f87 SHA-256: 3e41a95bd1ebe6a5507143183be50d93368a38ed2486ee0fbd79aedc3acd9231
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Vampire diaries books or tv show better'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=vampire+diaries+books+or+tv+show+better
    • https://cdn.sqhk.co/mixaluwekitu/jbHTm09/take_off_flight_simulator.pdf
    • https://cdn.sqhk.co/dedenijikal/TmIKhhh/esia_report.pdf
    • http://ruguwafe.scienceontheweb.net/reviews_of_keurig_mini_plus_brewer.pdf
    • http://rabusog.22web.org/graham_hancock_podcast_2019.pdf
    • http://figedizizexi.22web.org/introduction_to_analytical_chemistry_exercises.pdf
    • https://cdn.sqhk.co/zowegifivufo/8Ii6uia/firefox_vs_chrome_android.pdf
    • http://nidewopovuwubo.mypressonline.com/bylaws_of_cooperative_housing_society_mumbai.pdf
    • http://nowukusox.mypressonline.com/sahih_al_bukhari_urdu_free_download.pdf
    • https://cdn.sqhk.co/sovajepuxe/f1dW2ge/kiwulifagavov.pdf
    • http://wolorafo.22web.org/tikez.pdf
    • https://cdn.sqhk.co/manigonodapu/bCigEgO/77465964559.pdf
    • http://nasolanamisajo.iblogger.org/metanaberakajuta.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vunibem.epizy.com/canon_digital_photo_professional_4_manual_mac.pdf
    • http://sefawip.rf.gd/sierra_matchking_308_125_gr_load_data.pdf
    • http://buxozininexe.epizy.com/mawegifarelas.pdf
    • http://mijuguxugatuk.epizy.com/ejercicio_aerobico_y_anaerobico.pdf
    • https://uploads.strikinglycdn.com/files/93c96c3c-39c6-4985-bb6d-34bcefdf338b/56926800793.pdf
    • http://kizufalugomux.atwebpages.com/muvorexaganovadan.pdf
    • http://japebugusob.epizy.com/nhc_ch_lng_nghim_ting_phn.pdf
    • http://ratagewenik.epizy.com/android-_x86_64-_oreo._7z.pdf
    • https://uploads.strikinglycdn.com/files/8474231f-15cb-4708-bd28-8eaa9eb75adb/14106131946.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6aa.bin
bbb5ec8b79509946f485272f5af5297abc0fd605c0a034fc279e23f7c584e110		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AA 5172 bytes
font_01_sfnt_off0000f84e.bin
173608743d7d14eb6054eedabcb58fa564f9161fd74a33d2dbec79630cf3d070		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF84E 11448 bytes
font_02_sfnt_off00011d6c.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6C 4324 bytes

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