Malicious PDF — malware analysis report

Static analysis result for SHA-256 acad14aba1944374…

MALICIOUS

PDF

59.0 KB Created: 2020-11-29 01:03:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 746883ea510e327bf0e66b040760351e SHA-1: b0224a0fbecf96232495000fc0710b5b6610d50a SHA-256: acad14aba1944374d06166aeee1df3b1fd4ead3d289dadfb8b8382a273a88e71
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 'https://ggtraff.ru/123?utm_term=pastor%2527s+wedding+manual'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=pastor%2527s+wedding+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426545/normal_5f9bed54876e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466659/normal_5fbc9143105e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408461/normal_5fa09e9fa156e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_5fa8673b91743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426682/normal_5fb9492facfc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_5fb5ff23546c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f86f4e340924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388271/normal_5f9590fb0bbe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f8fe7ef5b931.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/8b90dd97-7173-49bf-bb31-abe6a0bf4b5c/patent_searching_tools_techniques_pd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12190230-5365-4ced-86ce-7bcdaa499d54/grille_salaire_apprentis_d_auteuil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1d6c6cf-5c54-4f33-be59-9e4e28682f0b/rogodosiba.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/fund_fact_sheet_axa_mandiri_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f99d735b-5ed6-4465-9abf-4d64d2027525/desolate_host_guide.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_off0000ab24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB24 5272 bytes
SHA-256: 5c67cd7826297bc2b52073863bdba92ce510c6c76ed2d253d81cac22580d8df0
font_01_sfnt_off0000bd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD12 10068 bytes
SHA-256: 07dd5ed1317c95b99ea2d917c70355bc1252ef88bad635f80d84d7ef2e326ae0

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