Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f31291a4d68b45…

MALICIOUS

PDF

74.8 KB Created: 2021-02-27 05:31:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d38dea0d7acfd438a5ec0f5f9eaa6531 SHA-1: 7828e7afdefe1ef430b1dd53ba562828b57d27af SHA-256: 08f31291a4d68b4590b348225e467424bef6c775f1b27c1b0455fc42c2d81994
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 URL designed to lure users to a malicious website. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a refrigerator manual, which is a common tactic for phishing campaigns.

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://jacksth.ru/award?keyword=maytag+refrigerator+mf12568aes+manual PDF link annotation
    • http://lezigovedavide.getenjoyment.net/what_is_the_gpi_of_an_arrow.pdfIn PDF document text
    • http://tuvivukaroj.mygamesonline.org/communist_manifesto_definition_world_history.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/wuzepepeba.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/hp_printhead_missing_failed_or_incompatible.pdfIn PDF document text
    • http://fomijegi.mypressonline.com/braun_irt3030_thermoscan_3_infrared_ear_thermometer_reviews.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/99532379595.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/36929141094.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/supernatural_cast_season_13.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/foxagafabinedofiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/away_from_you_song.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/romufo.pdfIn PDF document text
    • http://zuputes.atwebpages.com/best_books_for_married_couples_to_read_together.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/jodipijobumonupifuxeveki.pdfIn PDF document text
    • http://gefetela.epizy.com/bookkeeping_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/kejetimoxujuzog.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/st_bedes_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/botines_con_plataforma_y_tacon_fino.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/hairspray_script_mti.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FC 5848 bytes
SHA-256: 5b2712d89a044e065bcab6a98f7b74fa3632172c84caa022ac9cc0e9ea52acbe
font_01_sfnt_off0000faec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEC 10240 bytes
SHA-256: c08d83a3c9490824cbfce8cc5ad297c442311b8008b0ed28f32a19e905e4f5f8

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