Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b038f42aeda0f35…

MALICIOUS

PDF

64.5 KB Created: 2021-01-29 19:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 15d70e81b1ac0f83acd5bc2089d32b98 SHA-1: 834e80d59c894ec37bfcd633d2d50365dbfd4dc3 SHA-256: 6b038f42aeda0f35f781431ac8913fd4a8eb394f837e37104b2e9aa01ebbefb9
194 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
  • 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://crophysi.ru/wb?keyword=the%20tiny%20bang%20story%20premium%20apk%20obb In PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_600b21d4d93fe.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/auigDhd/kujupukeworibimejanawer.pdfIn PDF document text
    • http://on24-system.club/crashlands_game_downloadf0hn8.pdfIn PDF document text
    • https://cdn.sqhk.co/dogovonediwa/gidDk8a/51230248059.pdfIn PDF document text
    • http://weareanonymous.org/panzer_marshal_tutorial73daw.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/e4CBjh2/king_followers_and_likes_old_version_download.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/voxazedisula/28047808607.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/50152029518.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/peniwuwarebujibonuje.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/28132257897.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/wedding_acceptance_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/gatikunanifevepijudizer.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/tamil_amman_songs_remix.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/gebuta.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/autodesk_inventor_parts.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_off0000bff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF4 5456 bytes
SHA-256: b5b40eee56714f73414258e35900a32dd5f9c7e93b26180870f54df9354a7329
font_01_sfnt_off0000d25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25F 9660 bytes
SHA-256: 2ae4b2451815e210bd9e0505f1cca644963ffc4383d92275b510d980ba4e498a