Malicious PDF — malware analysis report

Static analysis result for SHA-256 5695581d420fd5b6…

MALICIOUS

PDF

81.9 KB Created: 2020-11-03 23:35:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 3fbad064c7d630a7300d2097c56febd4 SHA-1: 1b6dd36f856e03d97d62c481ac1ae0d84c80ef50 SHA-256: 5695581d420fd5b69430355a30a4ab033bb3d3c12a729c989e8a7ff8c2ab15d1
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.ru/123?keyword=mo+creatures+addon+minecraft', is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in a potential phishing or malware delivery scheme.

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.ru/123?keyword=mo+creatures+addon+minecraft In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bubeto/xoxelodogibotajusuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2588241-d2aa-4628-accb-46ebcc12f4a6/kalodalumokub.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/garcinia_cambogia_slimming_patch_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/goporo/madison_1_az.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1266f1f9-46f2-4b01-8ffa-573399b12c47/car_mechanic_simulator_2015_user_mods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4905bf08-3e47-488d-affb-5a80cb7b35d8/7789502452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcfe915c-ef15-436c-bd5b-6a72ead045e5/ramofu.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/zetat.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/99868643241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/831ba8fd-6f8f-4d8a-a7dc-7561658f5d33/busco_mujer_para_matrimonio.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/chhattisgarh_river_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd6f04f7-034a-4156-ad3d-e8a310093897/84520165643.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_off00010588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10588 5140 bytes
SHA-256: 980657523a1412187c5aac1b37fb25297e6a1b71d9d8911b3af8cfd25d566656
font_01_sfnt_off000116f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F7 11792 bytes
SHA-256: f0c09cce994c9b9cdc887dd036d4a430f994c3c61138b6e0cd4e16ad87b6405f