Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e97eb028f03caa…

MALICIOUS

PDF

71.7 KB Created: 2021-02-26 09:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 24cc103176fbcb1355ea72bdc4acd38c SHA-1: 4218c9313925fcb1ea4ec075e81b1bc54e95ce92 SHA-256: 18e97eb028f03caae79d3c6b30776605afad20199e682ae081e9790da6eb2dba
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://seumenha.ru/award?keyword=monstrous+nightmare+drawing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412763/normal_5fd88748ae882.pdfIn PDF document text
    • http://tifusavegapawuf.mygamesonline.org/timex_dual_alarm_clock_radio_t439s_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/ihhia7W/dupoxexizusibofiwu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481067/normal_6002123608d41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rususekobijo.myartsonline.com/subuto.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/buvawalitotumafaxiw.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/1080p_hd_wallpapers_free.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/bow_tie_pasta_with_chicken_and_peas.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/novusobagumesuvilet.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/food_handlers_card_test_answers_oregon.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/29318525911.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/aquarium_fish_water_images.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/32330774805.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/are_schwinn_spin_bikes_good.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_off0000dca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA3 5304 bytes
SHA-256: 131e316204b344e908d1eb99c13bf0c87c64cd944e2b211a8d8f22540da4d496
font_01_sfnt_off0000ee99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE99 10412 bytes
SHA-256: 5377517dbaca12de118c29bcddf415976f39343fbe0ab963f36462c21837690e