Malicious PDF — malware analysis report

Static analysis result for SHA-256 115afd30b8786049…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 08:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f80a0fc9d6286158b3851a80dd4127a8 SHA-1: d3aa81b7710ea448abc7ec463578c8bbf63b9183 SHA-256: 115afd30b87860490220f00d4d1eac4026db02533529b564499021a8c3f2df06
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=officejet+pro+8600+printhead+missing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408464/normal_600fc2d44038f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481539/normal_60167de8501a5.pdfIn PDF document text
    • http://pexaxasub.iblogger.org/juwunad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493201/normal_601f9cc557233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374188/normal_5fd7df7fd3c8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390371/normal_5fcb5c8f18fac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_5ff71190efe87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487888/normal_602779897e44e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_6003b1aa96479.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/nilafafakem/cdl_medical_exam_report.pdfIn PDF document text
    • http://bevowamudad.epizy.com/73025740953.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/zosoxexajomomafuke.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/how_to_change_to_radians_casio.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/55504776972.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/apkpure_apk_hack.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_off0000dda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA3 6132 bytes
SHA-256: 99be5b6ee3fc97602715725d8054400db8ab42b910d6c6b89cc86789a29501cf
font_01_sfnt_off0000f256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF256 10876 bytes
SHA-256: 5fa543094a9f5ba14104592c8176319d0a22c80c7b51dddfeb856afe4bded40c