Malicious PDF — malware analysis report

Static analysis result for SHA-256 e914cf71e6a7d3e5…

MALICIOUS

PDF

68.6 KB Created: 2021-02-07 21:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 8495d8d0397d617bc53358f2eba2d930 SHA-1: 96083a144eb9edcf4a4550f3cc9a15bf3e0cc33a SHA-256: e914cf71e6a7d3e5b35821e65cf91fec72b3bc12ed434b4f73dc77c15282151f
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://baarspo.ru/aws?utm_term=grade+9+chemistry+unit+test+answers PDF link annotation
    • https://cdn.sqhk.co/bidusowo/Biap5P2/baby_toilet_training_seat_trainer_bambino_with_step.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/NgeGB77/97455773209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_601aaa5e321f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460968/normal_600eb81c2ce6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5fdb23b20a3c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486981/normal_5fc85d352075f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407804/normal_5fdd69d6bbdac.pdfIn PDF document text
    • http://good-production18.site/horror_hunt_until_daylight_mod_apk_unlimited_moneyf1sp0.pdfIn PDF document text
    • https://cdn.sqhk.co/xizefonuma/chfgfjf/mac_os_comic_reader.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/jepinebawo/data_analysis_excel.pdfIn PDF document text
    • http://jawozamamopenis.rf.gd/kuvavodisajisusesad.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/78177568753.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/rexuwap.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/concise_biology_class_10.pdfIn PDF document text
    • http://goludoden.rf.gd/pidawesizik.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_off0000cdf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF9 5528 bytes
SHA-256: 8ad30c9d144d79e7ee1f4d635f3342a12dca4e2164d66b7b947d0c3f7c66c833
font_01_sfnt_off0000e0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B0 11064 bytes
SHA-256: ebe6e3f02aa092fc074e68d9d8b0cd5e98f09cb2967612b486a24566e5f60ed5