Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b7c6c3c132bb82…

MALICIOUS

PDF

73.0 KB Created: 2021-03-01 07:05:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 97b2a80d1d59ecd870ef95e5e72cdd91 SHA-1: 5ad60f014d67cba63c7110e6c892450e4036b450 SHA-256: 72b7c6c3c132bb825605d9ff8b7536bd36bb9c20149dfc954a0369d1e5729d7f
194 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
  • 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://yafferge.ru/wix?keyword=plus+premieres+new+albums In PDF document text
    • https://static.s123-cdn-static.com/uploads/4406213/normal_5ff145d688c3e.pdfIn PDF document text
    • http://zaxegod.getenjoyment.net/que_significa_que_tu_mama_se_muere.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/gipugoxidewalov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_5fd03431b213b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495843/normal_601737a49f69d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428342/normal_5fd039ece6e28.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/selaxenefagej.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/is_call_me_by_your_name_on_netflix_germany.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420441/normal_603554185c1db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384164/normal_5feed749d403d.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/dokoxupomogele.pdfIn PDF document text
    • http://filmera.ru/angels_fall_first_nightwish80dur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sipanokule.onlinewebshop.net/37419304211.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/how_much_does_a_lawyer_make_in_la.pdfIn PDF document text
    • http://mugazukadum.onlinewebshop.net/game_of_thrones_episode_5_recap_season_1.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_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 5200 bytes
SHA-256: 4387cdcbc669a13356a677fbe6915388f452d0eeb7f5cb960ef7dca50b3951af
font_01_sfnt_off0000f37f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37F 10396 bytes
SHA-256: e494736a55569443cbd014d6b08f01ee3872632d22661d2213bc005357622cb4