Malicious PDF — malware analysis report

Static analysis result for SHA-256 30eb8cecccd9e3c6…

MALICIOUS

PDF

70.7 KB Created: 2021-02-16 20:25:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 03bcc423e6e42fe0b7aa2c13b306a17f SHA-1: b797314fc66637184a74a029f1b0c4442e28c4f4 SHA-256: 30eb8cecccd9e3c62fc7f36b3d4e15b214aa172c46cfa4a285e7eb7f02dd0d51
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to other PDFs, suggesting a link farm designed to attract search engine traffic or users seeking specific documents. The presence of a 'download' button heuristic further supports a malicious intent to trick users into downloading potentially harmful content. ClamAV detection and ML classification confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=ct+dmv+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384472/normal_5fd049c3359af.pdfIn PDF document text
    • http://goods-amzon.com/sewinijekbw7qp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403422/normal_5feff3673e907.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530578/normal_5fcd7b6825303.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479445/normal_5fdd5b6686a77.pdfIn PDF document text
    • http://lifeshop.pro/889554497874lcry.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473619/normal_6029e4c637736.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369143/normal_600563164362e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424646/normal_5ff1edc4f2b3b.pdfIn PDF document text
    • http://oneshops.space/besuweteniteralosodojigm20zh.pdfIn PDF document text
    • http://begetus11ppz.xyz/descargar_libro_caballo_de_troya_4_gratis7ocdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412778/normal_6013457a70dc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380073/normal_5ffdc61df3c1f.pdfIn PDF document text
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/lefosogugup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382962/normal_6016c65a48675.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407804/normal_5fdd69d6bbdac.pdfIn PDF document text
    • http://everydays.space/information_about_annular_solar_eclipseq80lv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB66 4664 bytes
SHA-256: 1b0268e5adc7b4e6ca9ff5693baae8cb7e0cac566ed67de05a9d29db7977ec29
font_01_sfnt_off0000eb2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2D 10192 bytes
SHA-256: 68ac587275e19171388a7ce84d06692a4117f95344c630b30b2ece9d5afe36e8

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