Malicious PDF — malware analysis report

Static analysis result for SHA-256 be03cb0d68fdb416…

MALICIOUS

PDF

43.6 KB Created: 2020-10-26 07:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 692bb7f0267b8ea1e4b07e119c7699b6 SHA-1: 540f7a11f41be7eb01f2e0a434054d04ca05943c SHA-256: be03cb0d68fdb4168572d71d21aff7a191feeb7cf55b31aa32fe8800db3addfa
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.club/123?keyword=xamarin+android+player+localhost In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f871a445316c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_5f8d01e7c6c5e.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/sugaguxagu/alternative_dispute_resolution_festin.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/bangladesh_govt_holiday_calendar_2018_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/academic_writing_skills_cambridge_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/70342333220.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/38914041558.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae248bce-f852-474f-90b3-86fe4e533220/85916481820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a1c1659-9950-4f46-8fe8-58a36e3f3cb7/banagiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d42ad53-5fa3-42c7-9a84-8d030acc1dd9/24384892718.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f5dd9cb-36ee-4d4d-9e36-ab7ced2400b3/certificate_of_non_response.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/163b8c9d-6c40-4149-8fa2-206ece60cc0a/gorevurepifarenedemubasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9f4bf0-0583-4c46-8622-024274ffa573/88445479064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aaae715-3aab-42cd-8e55-3f382f19e13c/leruliborivek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/vimakasuxufolapomubas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8247/4163/files/noco_genius_5_battery_charger_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/98264689523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7669/7246/files/31242065285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7679/1703/files/game_dev_tycoon_apk_full_download.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_off000069f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F6 5392 bytes
SHA-256: 62bb05bfe755c4e840e9899b0808c3c45668ccd53210b340f70d08ccf1e0d78c
font_01_sfnt_off00007c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1D 11064 bytes
SHA-256: 8f9a6843912ad4c336e2bbf0f2e8eb1bbde8aa7deae9f414a8911545613d54b3

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