Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae0c2f1c36c658e…

MALICIOUS

PDF

73.9 KB Created: 2021-01-30 08:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1962a4638a9bda6f0f757bf38568bee0 SHA-1: afcd4cfe367c0b1d5d6c97adbe2dd167a781da8c SHA-256: bae0c2f1c36c658e7c2d6833e675ecb5918064348050d87d82b9d93ab67e9af1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to direct the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/wb?keyword=90 In PDF document text
    • https://cdn.sqhk.co/xidujefonari/YnxyoFU/4_immagini_e_1_parola_5_lettere_soluzioni.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/g1IjcM9/93079503254.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/uGhi4pX/gamutimijewusekisotida.pdfIn PDF document text
    • http://liketime.fun/hitmonlee_sword_location8cnbk.pdfIn PDF document text
    • http://braco.ru/entende_o_que_ls_ebook3xrm4.pdfIn PDF document text
    • http://youralteragoods.com/scrooge_quote_about_the_poorlu6p2.pdfIn PDF document text
    • http://ximasoj.22web.org/wivisulap.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/gijciiH/13134967206.pdfIn PDF document text
    • http://argo-tourism.com/have_yourself_a_merry_little_christmas_jazz_lead_sheettxgd5.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/ieqlijk/lodejutidelexelagakimob.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/fyAjcjh/doroj.pdfIn PDF document text
    • http://gedawirij.66ghz.com/beneath_your_beautiful_piano_accompaniment_sheet_music.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/robumuduluwise/bezibugefesovupogasap.pdfIn PDF document text
    • http://rowabereduxafu.epizy.com/pirates_revenge_arcade_game_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/color_by_number_sheets_free_printables.pdfIn PDF document text
    • http://notalopelovawu.epizy.com/free_colouring_worksheets_for_toddlers.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/xikiluv.pdfIn PDF document text
    • http://wadokeg.epizy.com/92904217959.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/mera_bhai_mera_bhai_whatsapp_status.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/39050720639.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_off0000e399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE399 5228 bytes
SHA-256: 7608e75b79e6971ce0f8e6d209397d3e8cbb4583aad1333c2736ce6b0b5c9e60
font_01_sfnt_off0000f55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55A 11024 bytes
SHA-256: 3476798952b391b06a2891874c561d24a48494ba840656e49043770b3a2bd4d4

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