Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c1936031cd7c6b…

MALICIOUS

PDF

71.9 KB Created: 2021-03-19 07:47:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9d9978d60e7a0cd377055896124de39 SHA-1: a2f5b7f06b55d0132ce79e36d27ab5f4bf37bbf9 SHA-256: f5c1936031cd7c6bb40d33348aad262c7c21303ddc46f5d6a530a884c6079d15
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'botokaw.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'love anniversary images hd', aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/123?utm_term=love+anniversary+images+hd
    • https://static.s123-cdn-static.com/uploads/4475715/normal_6007a1b033733.pdf
    • http://expressday.online/does_lara_jean_and_peter_sleep_togetherfo3p3.pdf
    • http://themarkuzmusic.com/88232876097dyryg.pdf
    • http://zomaragexavope.sportsontheweb.net/m_audio_fast_track_ultra_8r_driver_mac_catalina.pdf
    • http://acupofjacob.com/12459945149f700o.pdf
    • https://cdn-cms.f-static.net/uploads/4449775/normal_60395a1116b5c.pdf
    • https://cdn-cms.f-static.net/uploads/4393018/normal_6040485ae26b7.pdf
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5fd702fed2702.pdf
    • https://cdn-cms.f-static.net/uploads/4370053/normal_60327eaab6664.pdf
    • http://fejugutafilevin.scienceontheweb.net/what_is_the_highest_paid_nurse_position.pdf
    • http://turistik-a.ru/wills_eye_hospital_ophthalmology_clinic44lij.pdf
    • https://cdn-cms.f-static.net/uploads/4484636/normal_5fd60a70493aa.pdf
    • https://cdn-cms.f-static.net/uploads/4483388/normal_604631fdd81b7.pdf
    • http://jiwapadenejeza.getenjoyment.net/befug.pdf
    • http://italywow.space/gamodubivelawit3o4ft.pdf
    • https://cdn-cms.f-static.net/uploads/4479715/normal_5fdc1b20388f1.pdf
    • https://cdn-cms.f-static.net/uploads/4378153/normal_60159f4c03cfc.pdf
    • http://pinegobojefo.getenjoyment.net/66486568943.pdf
    • https://cdn-cms.f-static.net/uploads/4443608/normal_604cd7413868f.pdf
    • https://cdn-cms.f-static.net/uploads/4463034/normal_602657ae10f94.pdf
    • https://static.s123-cdn-static.com/uploads/4501775/normal_5fc850a726cb0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gifidabula.atwebpages.com/clinical_examination_book.pdf
    • https://s3.amazonaws.com/tudawufed/fijolufitipodajij.pdf
    • https://s3.amazonaws.com/muxegeza/dear_comrade_movie_video_songs_mp4.pdf
    • https://s3.amazonaws.com/jirebonudur/kujibufozelawaxop.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_off0000dbfb.bin
0c916a959ee63b78100c70bdf0b993a494f99db51174fa132c854d046d21ffed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFB 5308 bytes
font_01_sfnt_off0000edee.bin
bedca3a053f863bab8cb1fb08bcd8400123e6a131f52974accee4322cc9f3c80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEE 10664 bytes

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