Malicious PDF — malware analysis report

Static analysis result for SHA-256 d875a9432d5215dd…

MALICIOUS

PDF

67.5 KB Created: 2021-02-28 15:35:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 058b70aa85a166bacbc09556e59d6d47 SHA-1: 32114df5897c1e699e94c27032f0fcd41f6af755 SHA-256: d875a9432d5215dd9ac95844e90232f3c69a082e92882752fd1560622c322228
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://maypoin.ru/award?keyword=2006+bmw+330xi+sell PDF link annotation
    • https://cdn.sqhk.co/xezafube/dSjghhc/seven_letter_words_starting_with_ci.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488580/normal_5fdadb71f1e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476941/normal_601fc36e986e0.pdfIn PDF document text
    • http://maska-respirator.shop/flatness_tolerance_on_stainless_steel_sheetca502.pdfIn PDF document text
    • https://jonolepazom.weebly.com/uploads/1/3/4/5/134520471/pemiminesudosamavoz.pdfIn PDF document text
    • https://cdn.sqhk.co/tetolonul/eFLiWRf/53710535690.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419633/normal_5feefb2c25e31.pdfIn PDF document text
    • https://kususeni.weebly.com/uploads/1/3/2/7/132740764/8314058.pdfIn PDF document text
    • https://cdn.sqhk.co/puruwedisuma/AlieuvQ/37782366761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462688/normal_60324b2f95619.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477863/normal_5ff8bf6b0c3ce.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/tojazudibumogab/arial_font_family_mac.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_off0000c78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78E 5320 bytes
SHA-256: 990d5a5db56051617ab0717dbb90a7864e0afa6f62c8d88ff74b7b024f1b4c20
font_01_sfnt_off0000d9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AD 12164 bytes
SHA-256: cc8f3890b410ae11ff7df54798e740032a6eee26562d399d8882191e33c17f60