Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc477219b7ccdc6…

MALICIOUS

PDF

68.9 KB Created: 2020-12-15 13:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ee89589cea20bad1c3d5f55927501ee8 SHA-1: 56c006e7ca1a3ec7f6c90643134466d7fd087236 SHA-256: ddc477219b7ccdc615c81f0b918aeed444feaa1399d539e77e6668069a72c8de
174 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=ancient+egypt+book+pdf'. This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL in a PDF document suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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/aws?utm_term=ancient+egypt+book+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421040/normal_5fbc9b4e8d6ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387715/normal_5fbb2ff2422f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f9980a8d09c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471275/normal_5fb73c8696b73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421611/normal_5fd1778ab2795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_5fd192052e772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379237/normal_5f8e84e9c9bc1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0f3af1c8c741314320bf8/t/5fc1750c173fb5383bd9d6b6/1606513933575/remote_control_helicopter_with_airsoft_gun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce28aef169c371838629d4/t/5fd1505e4013ae1180f5960c/1607553119278/fojefoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae1a99fa-037d-42a7-82de-9e6532bb5783/rexejejujedududejebederuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4987e23-d4d5-406c-91dc-4ec21bc729bd/6932578365.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/evinrude_male_fuel_line_connector.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f54e7a-1242-49f5-9521-edb52f83ddef/codex_gigas_full_english_translation.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA3B 5104 bytes
SHA-256: 3aa1ed7788525f927172b4cc039d9f00b8ccf6beafd7d0169603b52d94e4a1c3
font_01_sfnt_off0000cbc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC2 11040 bytes
SHA-256: 75ac3d9e619247279b97cd08514e0ab030128e2546b7054bc712e22cf52cd352
font_02_sfnt_off0000f199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF199 16120 bytes
SHA-256: 73e2bae015806fcbcea00a5e77fef36cf57312733aebee32ba98308b5ce41d75

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