Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf3089530101971…

MALICIOUS

PDF

47.7 KB Created: 2020-10-30 04:58:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: fc6ac2b72ee9b183f3f1f3cb78743e95 SHA-1: da1bdb7dba81b9f28f5465eb2416553f2c1b306b SHA-256: dcf30895301019713245c5e5423b553e6a79c54da83c67bb155b70b7f5186d2b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 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://gettraff.ru/123?keyword=a+herd+of+turtles In PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/2075924.pdfIn PDF document text
    • https://jadekida.weebly.com/uploads/1/3/4/3/134349878/402138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_5f8acbb99de93.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/kemozipuvugati.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/8488884.pdfIn PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/df50809260b9.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/wilugugo/siginowazuvep.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/learning_and_development_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/calendario_serie_a_18_19_sky.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/rovumomenosudomogo.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/sociology_ba_1st_year_book.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/libisarivux.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/bapakofidevu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/desojusisidere.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_off00006fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE6 4500 bytes
SHA-256: b8ce433bcded369ce984e535b2f20bd35cc6f0e4e01bdaccb4e793cb354eef03
font_01_sfnt_off00007f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 10840 bytes
SHA-256: b468f73ef47a2709fad739b1d63c0f218ea73ef3888e67b745a448c7529ebda5
font_02_sfnt_off0000a418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA418 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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