Malicious PDF — malware analysis report

Static analysis result for SHA-256 915701b8d4601d89…

MALICIOUS

PDF

69.7 KB Created: 2021-02-14 12:49:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 47c401b43bd861e5c9e4e152b27b9b90 SHA-1: 56dcf3cfa3ecd395d492eac40dcd8e8cd83b34cc SHA-256: 915701b8d4601d89e3af6204de06dd39a234c13bf86d305709d7bcc61690faaf
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file 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 0.9998

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://yafferge.ru/wix?keyword=ge+xl44+gas+range+manual In PDF document text
    • https://cdn.sqhk.co/lexuxeza/W8t0Ejj/11395832578.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/egfYha0/pull_right_the_pin_rescue.pdfIn PDF document text
    • http://bumomuvo.iblogger.org/cisco_vpn_client_5._0_mac.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/sosupejuxofedo/sepataledozumifuletofe.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/vidmate_app_free_old_version_2014.pdfIn PDF document text
    • http://gesulobanaxa.rf.gd/80199276275.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/jilejo.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/83891248741.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/79237890120.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/breath_of_the_wild_strategy_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/dark_cloud_georama_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/ableton_live_10_manual_book.pdfIn PDF document text
    • http://kegenag.rf.gd/wilowewifomemesumetel.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/6864974503.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/address_book_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/biwemeregorugetugu.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/chord_sheet_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/baixar_whatsapp_2019_apk.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_off0000d4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A1 5192 bytes
SHA-256: b77c22931b5ec3bf4281347788f7e72f1b9068d134eab373ea2a13275756cb11
font_01_sfnt_off0000e64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64C 10348 bytes
SHA-256: 4dc3c2ac1b1e211be21b14557965009e52c1ac14792dd80664f0c6c2bb6f14a2

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