Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e9b77810a09e2e…

MALICIOUS

PDF

48.6 KB Created: 2020-10-28 10:55:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4a7504582105882c62df60d51f4ce9d0 SHA-1: 35c34e27067191193e70a87e45f5574a6a69a5da SHA-256: 88e9b77810a09e2e61e18498de299d2872da4912554a02905d0e2be09b1e31f0
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://ttraff.cc/123?keyword=how+to+breed+llamas'. Additionally, it exhibits characteristics of a PDF link farm, containing numerous external links, many of which point to S3 buckets. The ML classifier also strongly flagged this PDF as malicious. The embedded content, though obfuscated, includes the malicious URL, suggesting the document's primary purpose is to drive traffic to this malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.cc/123?keyword=how+to+breed+llamas In PDF document text
    • https://risenezapaf.weebly.com/uploads/1/3/4/4/134481661/kotes.pdfIn PDF document text
    • https://jutawalafomas.weebly.com/uploads/1/3/4/3/134316275/9921c249f26c.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/615bfaa9afa8c.pdfIn PDF document text
    • https://xutewosabog.weebly.com/uploads/1/3/2/3/132303209/sudedimosowun-niwimosal-gusefuganesegej-talalunegoge.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/bisafexesel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/memul/jokanikodexedegafalo.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/37846265604.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/18182299830.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/ejemplos_de_enlaces_peptidicos_de_aminoacidos.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/lekelisunorixifuzoxod.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/biology_notes_for_class_11_cbse_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/homero_poemas.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/technical_analysis_explained_pring.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/84210050236.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/xopitifiwepawokenabale.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bufedaki.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/55785980624.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/batuan_sedimen.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/basic_accounting_terms_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/the_celestine_prophecy_experiential_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/zadoguber.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/university_recommendation_letter_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/asperger_syndrome_test.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_off00007c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C81 5164 bytes
SHA-256: c5ff8b3a98f7f4de97ac56ab6aa91794b7bc3c4da27e0c0202f06e7aca5e06f4
font_01_sfnt_off00008dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFF 11864 bytes
SHA-256: 07b8f27aa4fb045f590cee8abfd1db67ed24e9dfb0ceb6aa8c62db8b20882c8f

Open this report in the interactive analyzer, or submit your own file for analysis.