Malicious PDF — malware analysis report

Static analysis result for SHA-256 b415a1dcae474d92…

MALICIOUS

PDF

72.2 KB Created: 2020-12-06 07:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 40b1523fbe8851a2d0c7727764d7d957 SHA-1: c01e98927688887a8ae1775f793074c4188672fa SHA-256: b415a1dcae474d92d58f3af4b9be41f38e00597e9284d9aeab8f95d02f5cfc28
154 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'. ML classification also strongly indicates maliciousness. While no scripts were extracted, the presence of a malicious URL suggests the document's primary purpose is to lure the user to a compromised site, likely as part of a phishing or malware delivery chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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=gertrude+chandler+warner+book+list In PDF document text
    • https://static.s123-cdn-static.com/uploads/4491965/normal_5fc8dd6230e15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426263/normal_5fc1835f483aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5f89dfa017451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5f89f00c4cb00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502567/normal_5fc206f4ee20c.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/42b94d17-4fbe-43c2-acda-4bd336cafb60/betatoraliwurugoxazegido.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/decreasing_file_size_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53497b74-7f19-451b-98f1-54802bf29d36/munasakozorek.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/17819397849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a07db5fb-6ba5-45de-aa27-4e2887ae7cbb/tezasufaxasid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab0a87d-ac78-42d4-b58c-72774c787ede/95688150661.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_off0000dd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5D 5356 bytes
SHA-256: d3ad40890ae38545b86a1363a167258b2a67d4f7e35fb4f8c8ba873554cf3f48
font_01_sfnt_off0000ef9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9D 10616 bytes
SHA-256: d8f52431e43b9813a3fe43c1abfc53466c9a86040b6444210fe2919f40c36c26