Malicious PDF — malware analysis report

Static analysis result for SHA-256 07aaa9ab397d2033…

MALICIOUS

PDF

68.8 KB Created: 2021-02-14 13:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 053d52101ab7075851ae312d1e91f179 SHA-1: 9c5616a6d557cc9e59dd8455ab79c40004b6fb13 SHA-256: 07aaa9ab397d20338ff20fceb0fb4475d8089d15561e8ba9a984fb0fa1a941ff
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/123?utm_term=miracast+apk+android+4.4.2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408177/normal_601cc0902083d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5fcb9bd298433.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453908/normal_5ffbcd0ce15b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_600f1449cc569.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417206/normal_5fc6a0b09a70c.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/aiah8jg/potazufimolonos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425910/normal_5ffaba0a0a67e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415929/normal_5ffd5151e4828.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488555/normal_600299c357008.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/jivala/nirometene.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/sample_cover_letter_for_teaching_job.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/97682693318.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/events_listing_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/application_writing_format_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/sociology_optional_syllabus_upsc.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_off0000cd6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD6A 5356 bytes
SHA-256: 6fd5af1f489e42bf54fcda64af50d66eae62f884b8bfd5a5c0006b21b1122508
font_01_sfnt_off0000dfc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC3 11408 bytes
SHA-256: 03e1e44c0bbbb38fcedb20148081d3dbb3ce5bee0bf9e4828b6a2624d0c1a675