Malicious PDF — malware analysis report

Static analysis result for SHA-256 42fec8334990755c…

MALICIOUS

PDF

43.2 KB Created: 2020-11-05 08:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 75e7fc78726655b9d163568f846f1f8e SHA-1: 9e91710d965a49faec44c31b29c634cf0dea8e89 SHA-256: 42fec8334990755c0fe2db006c22d3a802ecdbdebb1825c54fde5df7be1995d4
94 Risk Score

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, specifically 'https://ttraff.club/123?keyword=ffiec+bsa+aml+exam+manual+2020'. This indicates an attempt to lure the user to a harmful site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.club/123?keyword=ffiec+bsa+aml+exam+manual+2020 In PDF document text
    • https://nuvuxupu.weebly.com/uploads/1/3/4/5/134507381/85dab4b5e2.pdfIn PDF document text
    • https://vufufibujirefe.weebly.com/uploads/1/3/4/3/134355905/foxekit_puviforexexepe_naxolepedi.pdfIn PDF document text
    • https://turamuko.weebly.com/uploads/1/3/4/4/134458704/zezonowag_kemupudikajure_sujonewuvojeme_xegaxavus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416805/normal_5f9dc4a9c0f5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f9c676f0d9f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414672/normal_5f94bff4ed138.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/25ef3d4e-decb-45ac-8dc8-86a39034a5fd/sonic_bts_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/082bfb7a-d3a6-46d3-94e7-f8e506b6d799/dragons_titan_uprising_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/45199395248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d9b524-72c1-4704-a67b-04fa648ff768/the_house_on_mango_street_essay_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4692358c-aa2e-4cdf-bf8f-53235f80dba1/pinatolaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268d6f0c-76c6-4f5b-ba7d-1266abece655/estilo_tipografico_internacional.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_off00006eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB6 5368 bytes
SHA-256: a2d830de110dba3e34d8a7690d5632d0ea11b4323a16be02078b487894a031f0
font_01_sfnt_off000080f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F5 9260 bytes
SHA-256: b9b57d963ff7c98533c31e938af0924f5e4566e43131fcc47f35c73aaefe8b18