Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b2668e04a9d4c5…

MALICIOUS

PDF

75.0 KB Created: 2021-02-27 00:26:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 27688578d7b2121a465e8cb8c3fbafcd SHA-1: f44114bce5a8bf39d92e92a647866181e3c06512 SHA-256: 75b2668e04a9d4c53f37c9d003fc90e912906d0e2acfed833b8363dd22701c1d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/award?keyword=is+elephant+hunting+legal+in+zimbabwe PDF link annotation
    • https://cdn.sqhk.co/lojibuwe/aico0yS/20730649955.pdfIn PDF document text
    • http://shopee24.site/dragon_ski_goggles_nfx2fej7o.pdfIn PDF document text
    • https://cdn.sqhk.co/buzosefif/hbC1vQ2/wunojuba.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/22025493121.pdfIn PDF document text
    • http://habercigo.com/62639024754obbbd.pdfIn PDF document text
    • https://xevezuwojuko.weebly.com/uploads/1/3/0/7/130740392/tifus.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/jbhKnif/lodobebulorabarobenovex.pdfIn PDF document text
    • http://dajexori.mypressonline.com/raroxepowewixodigewubinu.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/23282573612.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/zuwosil/maytag_dishwasher_mdb4949sdm1_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/28837689618.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/briggs__stratton_vanguard_14_hp_v-twin_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/82917877389.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/drilling_through_thin_sheet_metal.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/tom_clancy_jack_ryan_novels_list.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_off0000e635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE635 5356 bytes
SHA-256: 6ce9820cb451c503021b17dd39394f81ec1dcc34e9ecd18db4fdc1f72d01fd6a
font_01_sfnt_off0000f85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85F 11556 bytes
SHA-256: 48bcf3b519b501c307639ca83c62abbbfff86a80dd49b2141952a2096112a455