Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d938f769c9fe15…

MALICIOUS

PDF

79.6 KB Created: 2021-05-07 01:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 2de7fb9adb03fc376fc41545096f0cfc SHA-1: 6135ed33ee9fd58dabc782515fcb9034a3750757 SHA-256: 03d938f769c9fe158570a4229879439f250cbe38752a3e9e652b5aac263d8685
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI points to an attempt to redirect the user to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and the ML detection suggest it may contain embedded JavaScript or exploit code designed to facilitate further compromise.

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://druttle.ru/strik?utm_term=mujer+que+sabe+latin+dicho PDF link annotation
    • http://resipowepo.getenjoyment.net/action_verb_worksheets_for_kindergarten.pdfIn PDF document text
    • http://rasazajafatirek.mypressonline.com/how_to_write_a_movie_pitch_examples.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/example_letter_to_the_board_army.pdfIn PDF document text
    • http://boketizabujig.scienceontheweb.net/adultery_paulo_coelho_english.pdfIn PDF document text
    • http://fizarumokugafu.mywebcommunity.org/nazijuzepemigugixolojo.pdfIn PDF document text
    • https://cdn.sqhk.co/zinoliwomi/zhhSbih/party_in_the_usa_tab_songsterr.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/fjf3ojf/jemufa.pdfIn PDF document text
    • http://lamejix.scienceontheweb.net/94206306946.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/wizitifowubux/6603290027.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/smile_it_will_be_ok_meme.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/47762748133.pdfIn PDF document text
    • http://rodedewezijore.atwebpages.com/cerfa_13750_x_05.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/17716553693.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/89394670126.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/tifefuvinuxezikev.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/backstab_apk_and_obb_file.pdfIn PDF document text
    • http://lurolubudoruk.onlinewebshop.net/10479791406.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_off0000e9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 5256 bytes
SHA-256: fe1ffaa28cc203a85bc525086f12523b3f842f428c154e8616eabb2e05c86616
font_01_sfnt_off0000fb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB98 11864 bytes
SHA-256: 335a88ed3816de43330b4c2678e5503364660d22ce1104b5981c7940ad679f49
font_02_sfnt_off0001220a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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