Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a289acbed86f4a…

MALICIOUS

PDF

76.3 KB Created: 2021-02-16 00:55:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6c0f5a4aed8b1aa91cc2563a73e1772b SHA-1: afa6c7159a85b87433a12e22f16d621abdffa826 SHA-256: 30a289acbed86f4a63d32c026399fab2e02b648bd666130653d6f8c0e14594a5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/123?utm_term=elements+of+design+in+art PDF link annotation
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/zoruwivoj_wadujiba_gawun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484156/normal_601f23688fe4f.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/ige5thh/portrait_studio_for_rent.pdfIn PDF document text
    • https://garegijewavib.weebly.com/uploads/1/3/4/3/134389285/f90547a90a491f.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/UMovWUo/89664055389.pdfIn PDF document text
    • https://cdn.sqhk.co/miviterul/fY3ieie/duo_mobile_app_store.pdfIn PDF document text
    • https://sikenobavusemel.weebly.com/uploads/1/3/2/6/132682861/715bb48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_5fd1234102e63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367625/normal_5febac8ca9fbb.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/fedojigudaj/best_free_spotify_playlist.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/33271684682.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/67690613632.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/93886854201.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/60625064142.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/mastering_biology_answer_key_chapter_22.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_off0000f045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF045 5184 bytes
SHA-256: 0d17bc7686931be36c7b163295f3dac2e31ae365c6ae39382c74fa75033c73be
font_01_sfnt_off000101d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D2 10200 bytes
SHA-256: 2beb020fec614c86beb29d8e70adfce4cd4af8a6c079abb399bd3caa6a18c2a5