Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae730b51c95ab56…

MALICIOUS

PDF

40.4 KB Created: 2020-11-01 07:00:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a7283e94e6b0a4905c1653374f86b119 SHA-1: e17e854595e8f990417dec1bfe19e1c91eebe81f SHA-256: aae730b51c95ab56d2a247fd0f6778279d6a3dadc8afa9eca0984927a9e8b991
94 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://ggtraff.ru/aws?keyword=dell+dimension+3000+upgrade'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body strongly suggests an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/aws?keyword=dell+dimension+3000+upgrade In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5f9d57131800e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f8ad01e4a507.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/jakujakula/ledomikavajarasid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8317/9184/files/xuzudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4982/6504/files/2019-2020_spelling_bee_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1788/5598/files/vulitirukosurusilekope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0623/0168/files/dejite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/surat_yasin_fadilah_arab_dan_latin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1489/3980/files/kofusuvuxonapup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1872/9672/files/social_equality_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/flutterbye_fairy_manual.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_off00005e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E15 5584 bytes
SHA-256: 9f842856a6cd790bc13553f29acab7e0b2ee07659ac675a1a4f311ccac01c783
font_01_sfnt_off000070f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F9 10672 bytes
SHA-256: 206411c23d7e26b86e53ff1ed1c7ffef453f580f04ccdc9fc91c4842eda7a982