Malicious PDF — malware analysis report

Static analysis result for SHA-256 11893cdbba286317…

MALICIOUS

PDF

42.7 KB Created: 2020-11-06 13:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 144baddd2d4c988c38701a6e98bd1464 SHA-1: ca91bd2e990cf100d1b2eb5906be8cbf6a64d83d SHA-256: 11893cdbba2863171750ab50f1d4c253d65c6be99659bd2b72127b43927217a4
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://traffking.ru/123?keyword=lady+gaga+the+fame+monster+zip In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f8bd9e37421f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412584/normal_5fa0c03276229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413705/normal_5f97b51798c03.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/98e91438-dc46-4a9b-b5e5-191613c614dc/movie_downloader_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a13c6914-5f4e-4b12-aa13-e332c317254e/dnd_5e_message_stone.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/talking_tom_hack_mod_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/derolipasotuwanob.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/pafewalavesowigeluwalowej.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/cal_poly_slo_campus_map.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/kujoxidake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8658b851-e159-4f5f-a179-fb5ab6f9556d/16372759184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2775497-675a-445a-8d7c-c97a27dc75c4/katudasezavij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed8e2c3-ff66-47e2-87e1-a388ad0740de/47426332888.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/xonalivepegobegusevila.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_off000065e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 5516 bytes
SHA-256: b23fd78ecc527b791e5d320dec1a9db4b485fbb255b56a7c1629fb18c539938b
font_01_sfnt_off0000789a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789A 10960 bytes
SHA-256: 0f3a4148d6fceea286bd323f64e8a0066f489a5899376829976d2e9e85137352