Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc62bfbdb97267bc…

MALICIOUS

PDF

61.3 KB Created: 2020-11-14 02:01:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3ce93d35c297cca174779b3f9197369b SHA-1: 1de2671ad9487fc1626d1a3508f59931181cb01a SHA-256: cc62bfbdb97267bc130af32668cb593bcb3a3f355c652199616bb6289bcc2c88
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. The embedded URL 'https://ggtraff.ru/aws?utm_term=royal+scots+dragoon+guards+sheet+music' is confirmed as a malicious redirector. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The document body appears to be obfuscated or corrupted, but the primary malicious functionality is the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=royal+scots+dragoon+guards+sheet+music In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f89c6272e2bb.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/dekogamik/rogoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/case_2_animatronics_survival_demo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c39e9d-bfa7-45c9-96c9-d745dce3656b/22489098923.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/63779146298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba489f34-8d3d-4dc6-a275-768fe1210b9a/37998761368.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/20008867416.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/gebixetud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef4560ce-d12a-44b7-b1eb-c420c0d5bf60/73774234111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88d415e-a3cd-4b1e-b95b-179b34080845/xupodaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/hey_there_delilah_piano_sheet_music_free.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_off0000b4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AB 5464 bytes
SHA-256: da92afacaa4129f8375c588d29e2d04987848232216f38d6a4266eb015f48c10
font_01_sfnt_off0000c71a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71A 9856 bytes
SHA-256: bbfb0d1d5c8ff17b0bb733f7e3affbc573464c46f8cd1a0464eda8afd7a57258