Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd650e0ff969f22f…

MALICIOUS

PDF

66.0 KB Created: 2020-11-20 03:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 17be0b49a1a7f69648e4765ca7afba8a SHA-1: 18b426a8acea623de7656ddbffd4c0d6b7186678 SHA-256: dd650e0ff969f22ff8d9f863f2e77c8926bfef2908b7d0320483252617f783c1
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru', which is also listed as an embedded URL. The document body contains text related to 'Chase debit card activation number', suggesting a phishing lure. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-10044376-0'. No scripts were extracted, but the presence of a malicious URL and phishing-related content strongly indicates a phishing attack.

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/123?utm_term=chase+debit+card+activation+number In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407069/normal_5f92510f1ca23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8716e60546b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9062dc46-475f-47fe-b970-e47e435ff76c/75507151756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ac7b87b-9b40-43ed-862f-32fd4529fb44/demuratesuxeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9b7fe37-d5ec-4d56-a461-f72326486b08/76781754487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4529ba7-b547-4619-ab00-05e83ea64fa7/jaresigopemobegosugevu.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/saruwetusex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/385d8c5f-33a8-4cf8-a3e4-c5b6055a0226/xubawudatatodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05506e01-894a-4852-a1fc-3360403cdffe/85432045384.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/forgecraft_knives_on_ebay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5aafcff-9887-4605-a51e-fe620e489851/dorisinirofugofubuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8cbfe43-5fe0-4266-890b-7bf2dbe0f1ae/38903942192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db1758b7-bed5-4a76-a75f-1dcf23468add/kevejasexosoxoxil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b87da1d-9819-47f4-9151-3e397bd7f3ff/q18s_smartwatch_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/14539832414.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_off0000c6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E7 5252 bytes
SHA-256: 8d9d4a93e2df14b3dda940e39eea3344431ac75361d7be200d4ff1d3375c33db
font_01_sfnt_off0000d896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD896 10208 bytes
SHA-256: eefe6a14667935c3a8d1a736daca10f8e8bc3b2a61c2e1b1eb304739877be697

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