Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa52cdd7041d39dc…

MALICIOUS

PDF

83.1 KB Created: 2021-03-25 23:15:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3240376503e9e9fcda4ab82f95be0df2 SHA-1: 7afc7440e2b10a6266f1b5b6a91a2286f7f09fcb SHA-256: fa52cdd7041d39dc75b6389658aee71320319c93619821248db6dc5e56c9b10b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'Animal farm study notes', suggesting a lure. The embedded URI points to a suspicious domain, likely intended to deliver a malicious payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=animal+farm+study+notes+pdf
    • http://janorewaxeno.mygamesonline.org/9153663173.pdf
    • https://cdn.sqhk.co/wolonevavaru/VLbhahf/68235556501.pdf
    • http://pobesegu.scienceontheweb.net/encyclopedia_of_world_history_volume_4.pdf
    • http://sazulido.medianewsonline.com/7029119440.pdf
    • http://design-kvartira.info/cybex_arc_trainer_750at_battery2kzda.pdf
    • http://suwufexez.sportsontheweb.net/58049888553.pdf
    • https://cdn.sqhk.co/jekunesoru/IEihge9/sport_mannequin_3d_model_free_download.pdf
    • http://edaeda.moscow/befupufupotenipox9l3.pdf
    • http://usene.xyz/37739505037u79o8.pdf
    • http://mikazuxo.mypressonline.com/soundarya_lahari_mp3_lyrics_in_tamil.pdf
    • https://cdn.sqhk.co/nazalugewu/eWUjfhf/lomimijusilenujuta.pdf
    • http://ralugugifoxatir.scienceontheweb.net/how_to_reset_samsung_ms650_soundbar.pdf
    • http://vutisonoj.sportsontheweb.net/tipos_de_canales_de_distribucion.pdf
    • http://moreprodukti.com/61813842572u9xa9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_285f185f9ad44fcd9034ceb984fb7cf0.pdf?index=true
    • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_d1766febd8c44aaf8c3725e1df7786d9.pdf?index=true
    • https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_8d1308087e504301af2ecc29d9ecfd8a.pdf?index=true
    • http://fotizojorirepel.onlinewebshop.net/jurassic_park_theme_song_piano_sheet_music.pdf
    • https://38c8c62e-1823-4c1e-8220-bc61efcc8a1c.filesusr.com/ugd/c24b9b_b711533842944f4b967625802414ddbc.pdf?index=true
    • 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_off0000fc4a.bin
e382aea7018f2381fb0862ba7d974966f56939f3956bff451614ab92c5f71c98
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4A 5160 bytes
font_01_sfnt_off00010db9.bin
96416b1653fde30cdb29c287e5651c9b87e6005dbf8b9ca687c8832eaee89f8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB9 10212 bytes
font_02_sfnt_off000130a1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x130A1 4324 bytes