Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fac1d0bfa7010ba…

MALICIOUS

PDF

73.0 KB Created: 2021-02-03 12:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ec647241eae4a86535086c1cbe6841e9 SHA-1: 41a97f4b97fe1fcafa4d868fca3a5052b9ce6ec1 SHA-256: 8fac1d0bfa7010ba9a44f6020e138f5a9c233042975194e9e8ed68473ea9b877
136 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
  • 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://bologen.ru/aws?utm_term=great+depression+word+search+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447093/normal_6010e534bf21b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413455/normal_600212472addd.pdfIn PDF document text
    • https://cdn.sqhk.co/mixenezir/gjdR3BV/43722480846.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/oggpdvo/greek_new_testament_audio_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446147/normal_5ffbfb894de35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448744/normal_5fe102337907d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376875/normal_5fefd7155e99f.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/Tihfjdl/30356838710.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449996/normal_6003ea0b43815.pdfIn PDF document text
    • http://bullbananavannaone.xyz/anthropological_thought_upadhyay_and_gaya_pandey9jbuk.pdfIn PDF document text
    • http://org-fruit.space/wixakikejawu7l9d.pdfIn PDF document text
    • http://pelistens.xyz/657323628132p74d.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/84351190232ghs5h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimamosapike.epizy.com/alcohol_detox_guidelines_nhs.pdfIn PDF document text
    • http://tozibuxadotoba.epizy.com/sinuwilazede.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_off0000e1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EB 5252 bytes
SHA-256: b4b5d27053c6e533b259b60d082deffeb2c586254fab963bc56f5dff2eef3efe
font_01_sfnt_off0000f3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 10312 bytes
SHA-256: f8df50a3cf2e32eb6efcc1e806930f8cad5dbad29eb69faa2accbefe638c59d6