Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22c07147986d9b1…

MALICIOUS

PDF

68.0 KB Created: 2021-01-29 15:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9c7385b05ea076bb91b6352d9f80021b SHA-1: e85e78fdb15c66b3aa371643b52b8f73aa1ab03b SHA-256: e22c07147986d9b1e4ce06e5a79de4f3b835214bd617ed0b48212503c209fe33
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, which is a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL and the overall detection suggest the document is designed to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

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
  • 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://yafferge.ru/wb?keyword=hammer%20simulator%20codes%20wiki%202019 In PDF document text
    • http://petrol-v-pol-price.site/super_amy_rose_the_hedgehogtjbl0.pdfIn PDF document text
    • http://tk-time.site/wanasobusetujowomfy.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/dfPyaia/jerava.pdfIn PDF document text
    • https://cdn.sqhk.co/wisivelu/jjjaPqs/distorsionador_de_voz_para_pc.pdfIn PDF document text
    • http://6gusevshop.website/jixolenubudutalavoduge3i7fz.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/jahfigz/dobuxolowabidop.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/ie2gcZM/runev.pdfIn PDF document text
    • http://tersq.fun/36039002608zi0c7.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/0ieVjf5/857481509.pdfIn PDF document text
    • http://naturaleone.space/80498952484odijc.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/tapelu/catchphrase_game_app_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/54470304873.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/3082918575.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/35629218852.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/durango_wildlands_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/monugimoxipanonifesuku.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/7108432423.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/scientific_method_controls_and_variables_spongebob_answers.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_off0000ca86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA86 5684 bytes
SHA-256: ced9d93aeef801c9dbccb52ae70e0637639cf5dcbf310ef65808b15090efe23e
font_01_sfnt_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 10836 bytes
SHA-256: 5b35b0be408edbd4912be23b111edcbf4e8c5ea2ca90771f324b67b355e84786

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