Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a49ce1edeff266…

MALICIOUS

PDF

81.3 KB Created: 2021-03-05 12:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fa4fff4333ad848941768f77ef4454de SHA-1: c26671d3fb69cddeb51d356c3e2b874ffcbc92e6 SHA-256: 50a49ce1edeff266e99a076f6009361fe8cd2a2e569e4f352f3d1af4d3e7b3f2
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://mezovuduw.ru/award?keyword=ridgid+10+sliding+miter+saw+with+stand PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480590/normal_603c56b4ad28c.pdfIn PDF document text
    • http://sodabisunuk.22web.org/signs_and_symbols_nabokov_explained.pdfIn PDF document text
    • http://alfa-quest.ru/my_mtn_ghana_app_apkpgvmr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464532/normal_5fedcbe312f00.pdfIn PDF document text
    • http://nonretloli.site/how_do_you_set_up_a_saltwater_fish_tank_for_beginnersaw2gb.pdfIn PDF document text
    • http://gedobitubojufu.iblogger.org/74276139786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_6012dc3b138a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nobajupotikude.rf.gd/15789130717.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/building_maintenance_checklist_sample_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/16658512392.pdfIn PDF document text
    • http://diverozisutujew.epizy.com/dinimexon.pdfIn PDF document text
    • http://laxolivavaru.epizy.com/tomb_raider_hall_of_ascension_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/kifejidorugo.pdfIn PDF document text
    • http://labutebumir.rf.gd/99263984029.pdfIn PDF document text
    • http://luwefotikejumu.rf.gd/niraxasenuxiviz.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/46338687616.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/78216099998.pdfIn PDF document text
    • http://wurifup.epizy.com/wiwubopafinopave.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_off0000fab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB8 5532 bytes
SHA-256: 186deab2fc528ec20885f79e947839bd5b8bb7549079dabde9eff0f607ef4728
font_01_sfnt_off00010d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D74 13340 bytes
SHA-256: 27ca6b28f0da2ec5bff4a4f434a51e4d03019c599370e22c7af9a3fdecd6e438