Malicious PDF — malware analysis report

Static analysis result for SHA-256 305a43addea99721…

MALICIOUS

PDF

88.7 KB Created: 2021-03-23 23:40:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5ae5a2129f9ce97426c6499596404abe SHA-1: 98ba9a3c6fdf05133f4b4fa70ab6441a12263cd5 SHA-256: 305a43addea99721fa996cefeed2807b2d9da01daac54b48a8abffc4158db428
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL designed to trick users into believing they are receiving an award or prize, which is a common phishing tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of a suspicious URL and high detection scores suggest it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/award?keyword=maths+worksheets+for+grade+7+pdf PDF link annotation
    • https://cdn.sqhk.co/nogegamapagi/f4ghhgd/35518123775.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/TY0Zjez/xefogegibipudu.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/wallpaper_hd_for_mobile_free_download_animated4lar3.pdfIn PDF document text
    • http://richmaya.site/robert_sedgewick_algorithms_in_c_part_5xkzhy.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/james_baldwin_quotes_on_identityylgoc.pdfIn PDF document text
    • http://app-3null.com/falolevadaruvozobaxavit2zon6.pdfIn PDF document text
    • http://7lessons.website/whirlpool_cabrio_platinum_washer_lid_not_lockingsjrfk.pdfIn PDF document text
    • https://cdn.sqhk.co/gapevusa/GFzH3he/kilelodowivide.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/QigGGzH/56272619094.pdfIn PDF document text
    • http://vir-tus.com/nudalakorixukukerl3w8y.pdfIn PDF document text
    • http://vashastrahovka24.ru/gejadikitebaraxuruch6.pdfIn PDF document text
    • http://test123test.xyz/serie_el_barco_temporada_2_capitulo_6gfosa.pdfIn PDF document text
    • http://metalllift.ru/tinusilevelope7b4we.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/jahfqih/smash_ball_hit.pdfIn PDF document text
    • http://luminar2-download.xyz/how_do_you_pray_for_a_terminally_ill_personw7hy6.pdfIn PDF document text
    • http://vovpomnim.ru/jezufejazolutitipikp49gj.pdfIn PDF document text
    • http://douchehq.xyz/341825413621xlxp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/1972_chevy_truck_build_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/70916556293.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/tenisejomip.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/xonebegazojujiduvuka.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/material_safety_data_sheet_formalin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E60 5144 bytes
SHA-256: 20e50fcab7b26604da62f5598e9a19ad7a27b33ecade02b0083122012ad55787
font_01_sfnt_off00012017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12017 11560 bytes
SHA-256: 8e136e46b45ba0d84069835d446025f61d17308a9c104a65b91126fcee230a0b
font_02_sfnt_off00014744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14744 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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