Malicious PDF — malware analysis report

Static analysis result for SHA-256 eead97141b5a9bb5…

MALICIOUS

PDF

66.8 KB Created: 2021-01-23 07:59:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb3880f1ad46776641673dccd5d86057 SHA-1: 6b1a07c48761088854d01cf150d24c9c122d884a SHA-256: eead97141b5a9bb544b5eab590dfb34b3b4cf9da055046e7aa73561b8d7b5dce
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=talking%20bird%20toy%20parrot PDF link annotation
    • https://site-1179441.mozfiles.com/files/1179441/purupuximizulowogoxigimot.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/hjjb6MM/26093605187.pdfIn PDF document text
    • https://site-1176767.mozfiles.com/files/1176767/87768084176.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393790/normal_5ff42ba6ea9db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421360/normal_6001efe3dac1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496585/normal_5fd12d8b5079d.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/ETifnH5/fashion_short_story_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/daaijid/warhammer_quest_shadows_over_hammerhal_solo.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/radubozufiwo/43909662720.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/neluk.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/42058086781.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/pofudomopupadulife.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/radius_diameter_circumference_worksheet.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/55889737805.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/hp_b_ed_examination_form_2019.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_off0000ca23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA23 5204 bytes
SHA-256: bfddd55a3db80601f63e1affa074d5f8aed5f9fd7b88a9fe858bbab1b57b8d7a
font_01_sfnt_off0000dbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE6 10232 bytes
SHA-256: dc739c787b247766a5da2fa719350959af7b1f9be0819430c507cdc36dcd8361