Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b046bb09dbb4f7a…

MALICIOUS

PDF

37.4 KB Created: 2020-08-23 15:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1d4a7b0835e78ed89079cfa9651447b6 SHA-1: be137e89ee19a22294ea2b9217d3419fd091a63a SHA-256: 6b046bb09dbb4f7abea3d7c1b97a38ba5ff9f4214f0f3324032b96cbc2a6105b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'implosion never lose hope mod apk androidgamegratisan', suggesting a lure to download potentially malicious software. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to known malicious infrastructure.

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://ttraff.com/pify?keyword=implosion+never+lose+hope+mod+apk+androidgamegratisan In PDF document text
    • http://zesuguja.escalantelife.com/uploads/1/3/0/9/130969377/5812459.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/settlement_agreement_and_release_california_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2431/8618/files/maldives_travel_guide_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/geographical_map_of_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/akuntansi_pajak_atas_piutang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/android_messages_change_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/69496093851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1862/3896/files/ccna_wireless_official_certification_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/security_analyst_interview_questions_and_answers.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_off00005373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5373 5432 bytes
SHA-256: 0dd6ea782ef28d8b51000d312bdde2f6c40143f6bffb7d4a134c817b1a7317f8
font_01_sfnt_off000065be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BE 10360 bytes
SHA-256: 509daeb5b5b1450c8aec329d8c7d6c27485375dfbb43f8986ee8d68aac54d883

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