Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4e6225e82b105d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-17 16:11:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f03ef81d541a7d11fe395060828cd5cd SHA-1: d96199c750f3946acf0b7a607e130f8f9071ed3f SHA-256: ec4e6225e82b105d677f45c4070845cf9a0ccfb13b88bd05fe79b9e3f51ec690
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'I am david pdf chapter 4'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=i+am+david+pdf+chapter+4
    • https://cdn.sqhk.co/jogeguzotire/SibjdDu/buffer_it_s_time.pdf
    • http://tryadasert.online/tres_veces_tu_pelicula_completa_repelis_2017khfh9.pdf
    • http://xonibiz.22web.org/what_are_examples_of_cognitive_dissonance.pdf
    • https://cdn.sqhk.co/leburogutu/jjjgijE/zenipasajirede.pdf
    • http://arenda-comp.space/396827536930aqk.pdf
    • http://bella24.xyz/33957971274wpp7c.pdf
    • http://sodalabs.pro/what_grade_level_is_explode_the_code_71cdaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cf104a5c-1361-4768-8e9d-37171c0dcaed/59142570593.pdf
    • http://mevediruzorapaz.rf.gd/56608115524.pdf
    • https://s3.amazonaws.com/wezukep/easy_flute_jingle_bells_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/5da8a8f0-e64a-46e6-8dba-c24b6dbd88d1/92732249554.pdf
    • https://s3.amazonaws.com/foneniz/lujuvojub.pdf
    • https://s3.amazonaws.com/tozaduliwubega/masokupezapewu.pdf
    • https://s3.amazonaws.com/tufujifinobiro/givefigilofivokoza.pdf
    • https://s3.amazonaws.com/jolozidabi/formal_and_informal_language_worksheet_4th_grade.pdf
    • http://zititerawori.epizy.com/86269630930.pdf
    • https://s3.amazonaws.com/viboxikuz/72533284670.pdf
    • http://satobagelovitok.rf.gd/pokemon_masters_datamine_report.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_off0000f06b.bin
c4e706315d54d4a1b6f0623c760c87032400bca3149e20f8688218818254d371		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF06B 5272 bytes
font_01_sfnt_off0001023e.bin
013117f9fb5f77ca988da3b61ded52b96645ff77dfcf4e8d4916ca545c8646cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1023E 10620 bytes

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