Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da6f09e881aaec8…

MALICIOUS

PDF

70.3 KB Created: 2021-02-15 05:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fbeb13ccd05a290fa8b487cae9595ace SHA-1: 577fc1579041996cadbeda8ad0f396bc2b337bff SHA-256: 7da6f09e881aaec82584b7de7af9a1d879492181b9d70e2dfaa23581f56932aa
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://baarspo.ru/123?utm_term=average+velocity+and+speed+worksheet PDF link annotation
    • https://cdn.sqhk.co/gazejuruni/hcgjNjg/nintendo_switch_lite_games_cooking_mama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414156/normal_60192fb48ced0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467573/normal_601f1694d8626.pdfIn PDF document text
    • http://help-bluebadgecenter.com/84848312206cv9g3.pdfIn PDF document text
    • http://3bureaureport.info/47460471127rwpyg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499283/normal_5fd2f367ce2f0.pdfIn PDF document text
    • https://cdn.sqhk.co/mevojazix/RjgHe8q/sago_mini_babies_dress_up_christmas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5fc8346aac4cf.pdfIn PDF document text
    • http://noksipals.online/geological_time_scale_of_earthjjm17.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/hbhbijG/scruffy_dog_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_6009f28ea4744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_60289dd768bac.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/povelenavuviw/wimeje.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/79300127654.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/8696191734.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_off0000d559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD559 5640 bytes
SHA-256: 48d677fbe0d5ad30d089d5c318761967be3faa5f496050533480239243d030c2
font_01_sfnt_off0000e8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A8 10452 bytes
SHA-256: d07eb360f59883553e41ba6abe44ecf4a7f0a97988970dab10ba60bc6533c21f