Malicious PDF — malware analysis report

Static analysis result for SHA-256 479e7cb62f3ca711…

MALICIOUS

PDF

39.7 KB Created: 2020-10-29 22:20:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0a5037534c547f3c6e952f677648f1d1 SHA-1: d9ec018a5c3602472b0e25be0f7253651fb5b6b5 SHA-256: 479e7cb62f3ca7119d04d0eeafd31d30f9d98382bb2afc9029e87fb09b3882ad
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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://gettraff.ru/123?keyword=harlem+link+charter+school+salary'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download page.

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://gettraff.ru/123?keyword=harlem+link+charter+school+salary In PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/lutudozof-zoragikiwota.pdfIn PDF document text
    • https://gobisenuginofaz.weebly.com/uploads/1/3/4/4/134490447/wuvexudekafufot-fanasamuvi-sokanosuku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba0a1659-4eb9-41cc-b35a-5edc24931c3d/52398689657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7778/2690/files/37751320320.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/78721764588.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/wto_analytical_index.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/zekozozemozulufuleve.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/benchmark_advance_weekly_and_unit_assessments_grade_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b0ad1be-dd3f-4e4f-9c1d-3c999030d39c/kiremokemedaniw.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/descargar_biblia_de_estudio_gratis_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/el_alquimista_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53cf92f-527f-447b-8409-2ae73b4d1276/51462491868.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/70965047594.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_off00005b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B63 5164 bytes
SHA-256: 362c3b4f412d07490fdcd0c67d9284f9e45bd59ca459917043d5251a9fd8739e
font_01_sfnt_off00006cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 11080 bytes
SHA-256: 4c89779fc98e5bceec44383de1ce8ef520ba21abb15eb1ea91eb01d35bec85cd

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