Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bd0fb4ad78cdf8…

MALICIOUS

PDF

66.1 KB Created: 2021-02-16 02:52:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c9aef0f55ad7e3839b01e7ac1a3cee92 SHA-1: 6f69c03ae8c91c0ecfe2cb1dbf572702d8d4755f SHA-256: 80bd0fb4ad78cdf8d6a140ef05931284ec4de235babedbebfcbc0beb18f08f74
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wix?keyword=helvetica+neue+apk PDF link annotation
    • https://cdn.sqhk.co/kanedufopuma/VGeihrt/xeparonexajufedarevoki.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/ifHhgja/18684388761.pdfIn PDF document text
    • https://galixasuja.weebly.com/uploads/1/3/4/5/134518214/1d0e8855ed.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/m1hh0hf/block_craft_3d_hack_download.pdfIn PDF document text
    • http://bulewedulipofam.iblogger.org/best_battery_android_phone.pdfIn PDF document text
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/6167369.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rufuregebedus.rf.gd/sejarah_hak_asasi_manusia.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/55484739264.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/vasunere.pdfIn PDF document text
    • http://mimewimirul.rf.gd/gaap_vs_ifrs_financial_report.pdfIn PDF document text
    • http://fumebuz.rf.gd/94791730799.pdfIn PDF document text
    • http://dupumimegijema.epizy.com/92634677652.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/18640882183.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/73962264565.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_off0000c55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55A 4740 bytes
SHA-256: 875e5f87cf9c2271367e17d6c3140ab5f2bfba971d11c3a9257d9d7ad058ec36
font_01_sfnt_off0000d591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD591 10988 bytes
SHA-256: 0027e6fa6a7d09f0fd2abc23b06a9ed7697ced9e1f704106b1384809852afa6c