Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef0b76cae602853a…

MALICIOUS

PDF

42.8 KB Created: 2020-10-17 20:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 006c67bd0331257abbdb7a6d15b0a2b2 SHA-1: 38c12c71f73a285be89e5a3167016c0b29ff489d SHA-256: ef0b76cae602853aa768c3e7675df9341be06369b21922f50e6cc464258d2530
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?keyword=dragon+quest+builders+2+room+size+guide In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8e42bfb8d1b0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00006688.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00006688.bin)
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/sigetopilawenamavelerub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8320/9373/files/star_wars_galaxy_at_war.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7322/2294/files/calibrate_battery_android_tablet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7382/4678/files/toram_pet_skill_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7041faed-b5c9-4c39-8020-6116e8b7ec41/75584433521.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e8ef9e-2004-4d87-a3d0-5ec254cd69bc/xizomodunet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/178ead7e-eebf-40f8-8e07-1e6331656a29/65574178623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1549f5ef-5c0e-456c-9eeb-bef3288ed2b3/66261070651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd7ba30-ad5d-419b-9693-b6d2785c7783/visoxasonifeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8822/5459/files/mob_farm_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4364/7399/files/oak_creek_dental_care.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8709/4694/files/bugirugaratamozawomareb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0125/2510/files/american_popular_music_a_multicultural_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2630/3134/files/geometry_quick_quiz_similar_triangles_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/miwekenenuxolivojoriwa.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 extracted file (font_01_sfnt_off00006688.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000532a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532A 5624 bytes
SHA-256: 0aed495a8a8a9a063bde5b13f2e2360eb1edebc4d0698ee993076b3a868e5f77
font_01_sfnt_off00006688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6688 5592 bytes
SHA-256: 0d7799f1a51cb7672286d8fa73c06c8113f81ad0dccb068a6df1cdd1563e4be7
font_02_sfnt_off0000796b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796B 10136 bytes
SHA-256: f1634617fbb3d59a3a8e68e8de80459ebd7271a7ca2f782f5cd785399e0c0787

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