Malicious PDF — malware analysis report

Static analysis result for SHA-256 f315771cb56a59f9…

MALICIOUS

PDF

58.0 KB Created: 2020-10-25 04:24:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: e3d2fa9e7d4bbf99059a28f4dda2dd07 SHA-1: 21fbc91644ead7bca8d024886ed73015dcded313 SHA-256: f315771cb56a59f928d71ccdd00f7e2b51e993cddf10dc013883602e3542db21
134 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.link/aws?keyword=tata+naskah+akreditasi+puskesmas+2018+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f872c387cb57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_5f8d171547720.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zuxadol/vijibomasutefetazug.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/dolerapuluxakawa.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/innovation_and_entrepreneurship_peter_drucker_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/the_brotherhood_in_saffron_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9edde751-5b7f-4029-b3d3-77d3029484b6/97275112936.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e81cd27d-34b4-485c-b310-2f43f3996641/lidevofefufedewolup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6470d10b-907c-46d8-a5ec-3f4b93930bb0/kutuzalajewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af2616b-343f-4d06-ae43-dfc7b6b66051/71302999747.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/hp_application_lifecycle_management_administrator_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/appraisal_form_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/vutopojizuj.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/gevukaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/bsc_nursing_first_year_syllabus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9424 5552 bytes
SHA-256: eecd96d9b481c922e6a3ad5b6147a1a51498c89061229d0f4ef6e62b7dcbe4ba
font_01_sfnt_off0000a6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D2 10992 bytes
SHA-256: 64537c1bba363afab889179558b56024b0c332fe172a17cce5d53c2ae5f9e9a3
font_02_sfnt_off0000cc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC29 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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