Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cef9c89004a1857…

MALICIOUS

PDF

43.1 KB Created: 2020-11-07 10:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: cac1b21713604d2d2c930e0867668a2f SHA-1: cd41487accdad5598a99e104e5504ec1add55c02 SHA-256: 4cef9c89004a18576bff111007b2989ce584529c68d7a138da899b5d8b3c633a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://traffking.ru/aws?keyword=define+special+occasion+speech In PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/e0cc8.pdfIn PDF document text
    • https://rixutabenenik.weebly.com/uploads/1/3/4/4/134498467/3f114.pdfIn PDF document text
    • https://diminulagiv.weebly.com/uploads/1/3/4/4/134489960/zased_buwoliviwot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f9744b38cbae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f9f8d7759234.pdfIn PDF document text
    • https://bemuzulezevateb.weebly.com/uploads/1/3/4/4/134440878/wamuteni-lejunes-gitat-gurupakujo.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.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/jiguwuzobozobaz/1_mg_ml_to_ul.pdfIn PDF document text
    • https://wupomasaxo.files.wordpress.com/2020/11/triase_rumah_sakit.pdfIn PDF document text
    • https://botebofeji.files.wordpress.com/2020/11/15963812645.pdfIn PDF document text
    • https://todafoper.files.wordpress.com/2020/11/33277194526.pdfIn PDF document text
    • https://jupenoke.files.wordpress.com/2020/11/pivej.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/usd_to_bangladesh_currency.pdfIn PDF document text
    • https://gobomob.files.wordpress.com/2020/11/vuvebijazigal.pdfIn PDF document text
    • https://finikonave.files.wordpress.com/2020/11/97934860415.pdfIn PDF document text
    • https://s3.amazonaws.com/jolufozo/mozidelesexunomalilafukuk.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_off00006ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE5 5004 bytes
SHA-256: 5864ec2486350a08a2fc34a540fff2c427efa4e4165b4d3a79fd646712249419
font_01_sfnt_off00007bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF6 10424 bytes
SHA-256: b0356cfa520ed6d16ad23d8c0de5f77eb7c9e91d7717a9dceca8e75245fd0c87

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