Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1e6fec748c48a3…

MALICIOUS

PDF

34.5 KB Created: 2020-11-08 17:35:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 14042cfd7a183d35c41f62042c9c7761 SHA-1: 880f72b9376c30ff3c54125d58f563d22b14704f SHA-256: af1e6fec748c48a32a459f7faa671451f979b43a037b4cc4685dea312567841c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=pizza+hut+blackstone+va PDF link annotation
    • https://fuvepuzineg.weebly.com/uploads/1/3/4/4/134463404/fuzufakutopuxiweluve.pdfIn PDF document text
    • https://majijajivetik.weebly.com/uploads/1/3/4/2/134265766/9763928.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/jenupexi.pdfIn PDF document text
    • https://dunidapakepew.weebly.com/uploads/1/3/4/3/134319263/463ce0be52.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/eb251.pdfIn PDF document text
    • https://jodawebodo.weebly.com/uploads/1/3/4/6/134634345/jupobij.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
    • https://dozunetad.weebly.com/uploads/1/3/4/4/134472758/5421769.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bomobaral.files.wordpress.com/2020/11/hematology_board_review_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/batch_production_record.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/asciidoctor_windows.pdfIn PDF document text
    • https://ragejaso.files.wordpress.com/2020/11/77388385368.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/17990265908.pdfIn PDF document text
    • https://pegivafonaj.files.wordpress.com/2020/11/world_history_book_free.pdfIn PDF document text
    • https://bisiguxul.files.wordpress.com/2020/11/ff12_zodiac_age_quickening_guide.pdfIn PDF document text
    • https://gezovuxa.files.wordpress.com/2020/11/javilapijegitamuzo.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_off00004970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4970 5104 bytes
SHA-256: aadab0533e58cddd49e20825ff03b1eb4c925112e2f4647b860ed0bd08c40048
font_01_sfnt_off00005add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADD 10148 bytes
SHA-256: 25b84e9cb532add5110d1960401fb26c9c1806409d9e267a53af5ffc1b940f5b