Malicious PDF — malware analysis report

Static analysis result for SHA-256 02400bc2616b26ac…

MALICIOUS

PDF

72.2 KB Created: 2021-02-13 14:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b620511bb785bd5045a0011ac3a01af1 SHA-1: 9d2eef59f160725f4e77afd568d3fe62699108c4 SHA-256: 02400bc2616b26aca60e788c0c9c1dae6ee764367775ea873cd9398706c7d711
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://baarspo.ru/wb?keyword=assembly%20line%20balancing%20software%20free PDF link annotation
    • http://biolinkus.me/30513427906fmo8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426830/normal_5ff6d5b1cc721.pdfIn PDF document text
    • http://petrol-v-pol-price.site/shadow_fight_2_pc_requirements98cb7.pdfIn PDF document text
    • http://atlas-copco.su/assassin_s_creed_valhalla_gameplay_part_1_deutschmuirs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472495/normal_5feefde36a72a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_6005de2c561cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389097/normal_602531e87431f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488101/normal_5fe56f5331119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402262/normal_5ff10598caa9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_60204a116f268.pdfIn PDF document text
    • http://repair-planshetov.ru/worship_music_sheet_music_freesfbyl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489050/normal_5fca82cb6895a.pdfIn PDF document text
    • http://korecos.ru/usmc_pack_instruction_cardi8nlz.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/ravuxudibure/annotates_google_drive.pdfIn PDF document text
    • http://koroxep.rf.gd/jobomagov.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_off0000db0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0D 5524 bytes
SHA-256: 7955f7dfe08cdf569d22ac716f813e4c8209cd2d359fb4f244ed1be5005a7a8d
font_01_sfnt_off0000edde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDE 10620 bytes
SHA-256: b1874bd5c6efedde91f61430864bf415d3eabfcda8f4a6ea4e4243d7f7450dab