Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7205c798244aa1…

MALICIOUS

PDF

72.6 KB Created: 2021-02-24 23:01:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1f45dae8e6bff6c3450d1c9372a835fe SHA-1: 34961a1005badc3f0cbd6449b3c72dadf3290d7c SHA-256: dd7205c798244aa136e61eeba24f8441b8f21745852d46b0061ad85ec41434ae
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=fishing+line+hook+knot+tying+tool In PDF document text
    • http://letekidela.iblogger.org/44521253008.pdfIn PDF document text
    • http://kuwazomo.iblogger.org/xivumeduvuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366384/normal_60058c71246eb.pdfIn PDF document text
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/1077967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_6034416675984.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/FhigW2o/76651336141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414353/normal_6013d894500ba.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/SujfHjg/vonuxinemugolagemixoje.pdfIn PDF document text
    • https://kekoluborefox.weebly.com/uploads/1/3/5/3/135327445/pevegasatuxal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380090/normal_5fce880fcb082.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/what_did_the_government_do_to_help_the_great_depression.pdfIn PDF document text
    • https://cdn.sqhk.co/tanusulirava/ghvIiaR/earthquake_utah_today_5._7.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/janodojivi/jitikofiwigakubo.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/82826275873.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/paradoxo_de_bootstrap.pdfIn PDF document text
    • http://xalolowoko.epizy.com/baby_day_out_full_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/10158158647.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_off0000e1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F0 4764 bytes
SHA-256: ebf0e256af355557b037a1be6cec4f1e58696ea8c6969a0d32e271e9e53b02c3
font_01_sfnt_off0000f235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF235 10164 bytes
SHA-256: 0e4e108ef36ac8e952ba573a1fbc88e57d6cda3a2724994f20aebc737d6c6859

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