Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c52bd0800a2c76…

MALICIOUS

PDF

69.9 KB Created: 2021-02-13 03:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a611a729c244a97d5d5f05815408720c SHA-1: 89cdde914dd1048164f15a2e3d0ba7ba4e6976da SHA-256: b2c52bd0800a2c76b278f31173e009080eb49a88308be9eb5d7586d3ab117fe8
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://bologen.ru/123?utm_term=operaciones+con+monomios+1+eso PDF link annotation
    • https://cdn.sqhk.co/zitedefew/ghGv1gi/64216246194.pdfIn PDF document text
    • http://probmaka.tech/report_writing_on_road_accident_in_bangladesh5ff01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392439/normal_600d35b2abce4.pdfIn PDF document text
    • http://edapog.online/josefoxewafasmi6f.pdfIn PDF document text
    • http://maykistore.ru/biblical_character_traits_chartalgt3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464996/normal_5ffba70de96d5.pdfIn PDF document text
    • https://cdn.sqhk.co/loxinesupiva/4fF92or/19024417528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448137/normal_600d187e40f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366405/normal_6026f5d52c887.pdfIn PDF document text
    • http://moreprodukti.com/download_fb_video_apkdfewi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5ffce5bf7fbff.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/bidivo/clash_royale_chest_opening.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/wapes.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/functionalist_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/rituzeneso.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_off0000d5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CB 5124 bytes
SHA-256: 0af537555796dc1bc620b5d62aa7e26615d1f55d34a2b16df4f70dab507d7b78
font_01_sfnt_off0000e720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE720 11060 bytes
SHA-256: b894f1cb398263ed2ad5c969389642e5cbb318ece0149e8506088b0788b1725f