Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba8e32f99f262e0…

MALICIOUS

PDF

70.2 KB Created: 2021-01-17 04:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0846084d4a136bd4d5f1979b4744294a SHA-1: 433d9608cd4ff5bef5146740f3b9ea374e55a349 SHA-256: aba8e32f99f262e07cff66ad4996e6d6d05f6bb949a6df98d29b7d13bc5ffd74
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious link and the 'SE_DOWNLOAD_BUTTON' heuristic suggest a phishing or social engineering lure designed to trick the user into navigating to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=download+paper+towns+movie In PDF document text
    • https://site-1177153.mozfiles.com/files/1177153/does_washington_dc_have_a_hockey_team.pdfIn PDF document text
    • https://site-1175681.mozfiles.com/files/1175681/green_bay_packers_weather_this_sunday.pdfIn PDF document text
    • https://site-1219875.mozfiles.com/files/1219875/likevowigu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424026/normal_5fd229a5d60f5.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/sazixipame/kurakivumexu.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/loan_amortization_google_sheets_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/format_of_residential_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/97129498936.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/correct_sentence_punctuation_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 5256 bytes
SHA-256: eb07ed9d4a873136e99728a3b5550aeb1d6e48ec31036c2d43717c4becdc0917
font_01_sfnt_off0000e852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE852 10716 bytes
SHA-256: 40f7b60cd620fdd7a0eb844b470c201266b8e76be2b4e1495c2678b0cad2d674

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