Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0830310f7bc0df…

MALICIOUS

PDF

60.2 KB Created: 2020-10-17 23:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4aabb44048fc65d699672fa3346fe7e2 SHA-1: 64fcb730d7e98c20ca839623b6bc62ad149aaf0a SHA-256: 3e0830310f7bc0df62640b9bf1ec5e9b679068372e0e9d6bd987507f9a8ef534
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://ggtraff.ru/strik?keyword=skam+espa%25C3%25B1a+streaming+ita In PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/juterunarifidoxojek.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/6181524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f88a1404502b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f8b3888a0abe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f8a4373d50f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f88a70644d9f.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/1/0437/7785/1553/files/vedodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8841/7446/files/garidosaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/wo_mic_pro_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1127/1588/files/hulk_smash_games_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0918/files/maclaren_techno_xt_strollers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2382/6085/files/25099242278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/fuvosopugalagoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5922e166-8ce3-4a35-b617-bd9816dc1bed/siviwozojilaropoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bcb2e0f-2388-467b-8776-36402443c316/43469929644.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C11 5488 bytes
SHA-256: 7f795e70864b57073de69a6657e7222341aa3483d968b7a7f3c9061f886dbe24
font_01_sfnt_off00008e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E22 6340 bytes
SHA-256: 9159c3bbe4e617fc6ab21800076b31c718e0e83db4142b903295bba04c9b58a9
font_02_sfnt_off00009dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAE 1772 bytes
SHA-256: b44234b99998f6faa0297193f745ab57bbfde2d736c89d064edb68d8857b7b3f
font_03_sfnt_off0000a628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA628 11204 bytes
SHA-256: 75ebdddcad5a69b00055ce1cef9ec183f8d87247ca6e9aa84ee0e63e5e7ddfcb
font_04_sfnt_off0000cba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA2 16100 bytes
SHA-256: e35eccadac00179dbe2e3b006bf53272e2d1b8c783dbea328c5e4da005a83383

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