Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2879797e931f35e…

MALICIOUS

PDF

42.2 KB Created: 2020-11-04 23:07:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 66a98159194a890c71350b0e41644ac3 SHA-1: 2b6a195068b42caea694e1a35c9cdf2190299fa3 SHA-256: a2879797e931f35e494b2e6f86869336423ea6218ae6bd2a3bd77d8e48b30c74
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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=playstation+app+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390323/normal_5f9c160b56e66.pdfIn PDF document text
    • https://vaxeratomox.weebly.com/uploads/1/3/4/3/134397216/paruj_bogejadidifi_janes_mapiji.pdfIn PDF document text
    • https://sunakixekorej.weebly.com/uploads/1/3/4/3/134376052/ditifum.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/nanes_xaxoxaboba.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/528547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f8ca4b49b9ea.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/munaziruzaxuw-wowomulurodi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5f8f425c4583b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f9010985650b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/felasorarabipis/dizetike.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/free_download_adobe_acrobat_edit_file.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/cask_of_amontillado_activities.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C82 4724 bytes
SHA-256: 5307b633f3ecc57f6b6a08e1b684b75721c26e965415fe217464f1ed7e0b52af
font_01_sfnt_off00006ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA8 9808 bytes
SHA-256: f5c0b9782a05177f55eec53a98770ca66e4723feb6e1237165021726e5dcb0da
font_02_sfnt_off00008e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e