Malicious PDF — malware analysis report

Static analysis result for SHA-256 e548c056ee6289f0…

MALICIOUS

PDF

89.3 KB Created: 2021-03-14 20:18:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a716389cee75bc76f3961a47fa2269dd SHA-1: d1f75483428b72e0e722060b0a4aa5ae49eed6d9 SHA-256: e548c056ee6289f027a4d6dad759f8912ab7be14d4dca35ded2c4e1a17e68cd2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, and the document body, though heavily obfuscated, contains references to 'one piece bounty rush apkmonk', suggesting a lure to a fake download or phishing page. No scripts were extracted, but the PDF structure itself contained malicious indicators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/123?utm_term=one+piece+bounty+rush+apkmonk
    • http://pifovabu.getenjoyment.net/63160716712.pdf
    • http://gapagal.mywebcommunity.org/sony_sa-ct780_sound_bar.pdf
    • http://gejesixave.scienceontheweb.net/vifefizadefob.pdf
    • http://fafasun.iblogger.org/classe_anthozoa.pdf
    • http://zomosidotewe.sportsontheweb.net/68722160302.pdf
    • http://ruxenawuxovogu.getenjoyment.net/big_fish_games_settlement_claim_form.pdf
    • http://najapizarut.22web.org/is_death_note_the_best_anime_ever.pdf
    • http://jokojujut.medianewsonline.com/fl_studio_12_bass_plugins_free_download.pdf
    • http://sogixusi.medianewsonline.com/cabala_portugues.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zenujasope.epizy.com/nuxovetuv.pdf
    • http://nabikelotedabe.epizy.com/wevilax.pdf
    • https://uploads.strikinglycdn.com/files/6cd131ca-ff20-42aa-91bf-149e6f40195d/3877996729.pdf
    • http://wemaxoseni.myartsonline.com/28796365502.pdf
    • http://zuxokoberibaw.atwebpages.com/wedekasekezuk.pdf
    • https://uploads.strikinglycdn.com/files/63b6582f-1740-445a-820f-152e4d86a63d/wovuverezibeb.pdf
    • https://uploads.strikinglycdn.com/files/e78f8d64-7c7d-49fa-9e62-0525100b75ff/8574139084.pdf
    • https://uploads.strikinglycdn.com/files/17104d5f-e3ae-4d8d-ba43-567c59e5bdbb/61105619527.pdf
    • https://uploads.strikinglycdn.com/files/21d132c5-57d5-497b-b78e-01f9c3c4e416/fz_new_model_2020_mileage.pdf
    • https://uploads.strikinglycdn.com/files/66bfacba-2826-480b-ad54-8b6b9235f4d9/nijaliruvatuzozujujeduzex.pdf
    • https://uploads.strikinglycdn.com/files/15d2986c-4b23-4687-83ed-323314e84c3f/dragon_ball_full_color_manga_online.pdf
    • https://uploads.strikinglycdn.com/files/c5121098-b3b8-40f3-b2b0-01b463aa40f9/html_to_converter_php_7.pdf
    • https://uploads.strikinglycdn.com/files/d8d62b54-71f9-4fe0-a40a-c7661adc2e82/90638001070.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
    • 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_off0000ed07.bin
6602317b12e12bf79e36a21074d5d3081ced3b9031777a664c193109f49d6244		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED07 5356 bytes
font_01_sfnt_off0000ff0d.bin
3c6bfdd71638cd9552756fb5301274ff67d4826bb5500dc35ace72b63a237d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0D 16576 bytes
font_02_sfnt_off0001326c.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1326C 16204 bytes
font_03_sfnt_off0001479c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1479C 4324 bytes

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