Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c41f3a1c90c0b09…

MALICIOUS

PDF

42.3 KB Created: 2020-10-30 15:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7fb0ea7f5866ff9ffddcc405a0eccf98 SHA-1: d015e369456800ac4a504482e7f9e84fc08b74dc SHA-256: 0c41f3a1c90c0b09a4e4c070e0aa70c66231b0245782f1980fd8b1f6b97dc9d3
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, https://gettraff.ru/aws?keyword=bone+thugs+and+harmony+song+about+weed, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The presence of embedded URLs suggests an attempt to lure the user to external malicious content, likely for phishing or malware delivery.

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://gettraff.ru/aws?keyword=bone+thugs+and+harmony+song+about+weed In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5f8bd40664712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5f96deb0adf60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_5f976efa5d279.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/tuwom_titupilum_megigawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411916/normal_5f95115b4fc01.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/8731345.pdfIn PDF document text
    • https://gidujinogojavu.weebly.com/uploads/1/3/4/0/134096303/6249227.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/zuwipufum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5f9010304ddaa.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/dcedadf33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3904/3996/files/another_word_for_consistent_crossword_clue.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_off00006601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6601 5592 bytes
SHA-256: 2d42d66bc0e4023b3e4d8b83282fa4ece7d558d3e55121b4327bb431764eef50
font_01_sfnt_off000078ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EC 10424 bytes
SHA-256: 1f6050a444132b3ddba83ae2bf817a833991b137fbdc0cb330ee909f551dd729