Malicious PDF — malware analysis report

Static analysis result for SHA-256 97130c4da8f6f466…

MALICIOUS

PDF

74.1 KB Created: 2021-01-29 04:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d72645ccdda5e471f30caa9d80cff68a SHA-1: 60096e4e4677ed0ac850355dd296cc6b77f3981a SHA-256: 97130c4da8f6f46605698bf932289644e68a1f8941d3a5a784eaa10078154698
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically `https://ggtraff.ru/wb?keyword=bullet%20hell%20100%20mod%20apk`. This suggests the document is designed to redirect users to potentially harmful websites. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing trojan.

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://ggtraff.ru/wb?keyword=bullet%20hell%20100%20mod%20apk In PDF document text
    • http://chemistryplus.space/jumpstart_kindergarten_1998_bgmnnrq5.pdfIn PDF document text
    • http://leadtop.co/85752163324sv25u.pdfIn PDF document text
    • http://smm-target.ru/zobuxunif48tkl.pdfIn PDF document text
    • http://wisopenudaris.22web.org/cask_of_amontillado_short_story.pdfIn PDF document text
    • http://good-production20.site/xerowusesurepenfqpl.pdfIn PDF document text
    • http://bilkan.fun/age_of_empires_2_online_free0acol.pdfIn PDF document text
    • http://visionnew.xyz/fishing_warrior_online_apkroutt.pdfIn PDF document text
    • https://lemitixodage.weebly.com/uploads/1/3/4/8/134868200/9408540.pdfIn PDF document text
    • http://cashbackk.site/light_me_up_lyrics_ingridesr4u.pdfIn PDF document text
    • http://itravelimpressions.com/artificial_intelligence_movies_listrng3k.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/jutenojamega/33726869520.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/35857576077.pdfIn PDF document text
    • http://wosolebaxuwutux.rf.gd/combustion_symposium_latex_template.pdfIn PDF document text
    • http://gazugitub.epizy.com/sobej.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/android_navigation_app_with_weather_radar.pdfIn PDF document text
    • http://zividovapajawuv.epizy.com/empower_a2_elementary_workbook_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/16938571326.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/multiplication_of_exponents_worksheet.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_off0000d727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD727 3164 bytes
SHA-256: 42696cdcb2695d0cd65332c0d630fd0b2605fe63028f8513535ccc61dd214c66
font_01_sfnt_off0000e288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE288 5232 bytes
SHA-256: 238a44a99718a992295a31835756776358549c9638f9feed8ca9448d34c19176
font_02_sfnt_off0000f431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF431 11768 bytes
SHA-256: 8fc4436e59c3ee3921f1fb77bbdeb55afdead3e42e522846af81dbdf0013d2fd