Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04613659d259262…

MALICIOUS

PDF

72.4 KB Created: 2021-02-02 09:15:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ea56bb1a6e24fdece78a3e34c4e3428d SHA-1: 6103f1178f968d6874dc312a710f7e178dbfcc8d SHA-256: e04613659d25926286171d3623ea65aa89e43a9e70b18bd4bd6adc77d2d3981e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=last%20of%20us%20wallpaper%20ps4 In PDF document text
    • https://cdn.sqhk.co/jesisuvov/ableihk/febunukoxisololafutufefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428061/normal_600b6c8fe3fa5.pdfIn PDF document text
    • https://cdn.sqhk.co/bijowiroma/OKgiZjh/wheres_my_droid_not_working_android.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/LIjjjgc/97699547708.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489853/normal_5fe55fdbda5d1.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/3jhseV6/fiposamujiwup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459630/normal_6002ad0d8d310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410216/normal_5fda4f3a1396f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457586/normal_5fda6c1e7e733.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490754/normal_5fc5a712792e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458635/normal_5fcda72e8166a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383921/normal_60038b51edec1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445128/normal_5fee8cab1a4c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gunololidomip.rf.gd/jaxegosolerabodin.pdfIn PDF document text
    • http://bobesesoja.epizy.com/platformio_serial_monitor_speed.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_off0000e0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EB 5016 bytes
SHA-256: 94658cff4011db9ae95e30b4c13edcdddef99752e7948bfcb420827cb5b0355f
font_01_sfnt_off0000f229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF229 10136 bytes
SHA-256: 68caa98a874ac93dece67fd6dd8c05db8d03938bcb8e934f4e561e8a6661a3c7