Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7a48cd66b4dc2f…

MALICIOUS

PDF

78.1 KB Created: 2021-03-02 19:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 06e4516617071a39b387aa38d7ddff94 SHA-1: 5033a152cc9ccb56686c634f445b5970520f6e0d SHA-256: 4f7a48cd66b4dc2fa12833af9534c2b0f02a66afaa86c5823777cf17be89882e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to "new fairfield schools human resources", directing the user to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://fokemale.ru/wix?keyword=new+fairfield+schools+human+resources PDF link annotation
    • https://cdn.sqhk.co/nemuvefik/jfBgjja/balenciaga_triple_s_white_womens_37.pdfIn PDF document text
    • https://cdn.sqhk.co/joziroluxu/icShbd0/90130535061.pdfIn PDF document text
    • https://cdn.sqhk.co/buzomesil/h3MzRdR/91729931338.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/lTiW0gj/mefelifeso.pdfIn PDF document text
    • https://cdn.sqhk.co/widiroje/ifnz0hd/risudizizevilija.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/zjaFTgO/rufoputurawozep.pdfIn PDF document text
    • https://cdn.sqhk.co/rowubuvuke/jj9NhdU/carrom_board_championship_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/wejewenu/2iegjEa/tezudufevakutub.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
    • http://remabinamuv.rf.gd/how_to_set_up_a_rca_surround_sound_system.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/zemukesanetexuwod.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/happy_birthday_gif_pic.pdfIn PDF document text
    • http://semiwexojexudu.epizy.com/76967832007.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/sezuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/70832426014.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/ielts_speaking_test_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/hepatic_encephalopathy_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/jibubizurajeforomal.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/all_in_one_messenger_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/flowers_for_algernon_charlie_and_miss_kinnian_kiss.pdfIn PDF document text
    • http://mimelaketikapex.rf.gd/lulowu.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/reset_maytag_dishwasher_blinking_lights.pdfIn PDF document text
    • http://fabotiwes.rf.gd/lanotilimawuragimu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/zovel.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_off0000e7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B6 5124 bytes
SHA-256: 3fccf784fd476f5d7e919d975f3c3f2b1ba2049b66943eda2074fcf70c85b54f
font_01_sfnt_off0000f8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FF 9852 bytes
SHA-256: e87e178f86d631be88aad1131c6f2fac68831cc423b61e6370105f5fdc60ebc6
font_02_sfnt_off00011acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ACD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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