Malicious PDF — malware analysis report

Static analysis result for SHA-256 d982c434db045bed…

MALICIOUS

PDF

73.8 KB Created: 2021-02-26 01:56:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a5f7f8f44ea865d55e0215fb3531bf7b SHA-1: a231d9f14514c4f870ebf47d7c1bf3ebe75789c4 SHA-256: d982c434db045bedc2df9762fcb85a3f9246c15600314d70e208132515e594a6
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://jacksth.ru/award?keyword=critical+theory+today+chapter+2+summary PDF link annotation
    • http://finansi-7.online/bury_sixth_form_college_address5hkgm.pdfIn PDF document text
    • http://antonioit.space/mcgraw_hill_connect_biology_answers_chapter_4i89st.pdfIn PDF document text
    • http://present-mag.ru/649093875650eu91.pdfIn PDF document text
    • http://lenagilos.22web.org/muvegededeledaviwajixu.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/e7NHfhf/kixosetaxamisifivu.pdfIn PDF document text
    • http://zootime.store/candy_crush_saga_level_53226s3o.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/dusubonifu/86886030591.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/kulutagumubarijisopu.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/bruges_belgium_tourist_information.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/vapojisakirajijaza.pdfIn PDF document text
    • http://fenukasoroxido.epizy.com/nanomikeruxorel.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/xesolesinowulatefi.pdfIn PDF document text
    • http://rawozenagi.epizy.com/71719387309.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/microscopic_haematuria_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/lego_bionicle_instructions.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_off0000e59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59E 5452 bytes
SHA-256: e7f2974050fc253904081880308c3666aea277c7362782779426c521e6da25c7
font_01_sfnt_off0000f801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF801 10012 bytes
SHA-256: ac4ee789c37ef019caacaf050572adb2cedf4854210b7744c10bbdad1ac12a05