Malicious PDF — malware analysis report

Static analysis result for SHA-256 068e01508b48de18…

MALICIOUS

PDF

71.9 KB Created: 2021-02-25 02:08:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 3e47f4684cf81e5cf2de0c0e51c1e070 SHA-1: 8d96567afb7e4445872711fd7ed64c8e374fa332 SHA-256: 068e01508b48de184a3f9efc8e0962bdc4de594723c6486976098cb61cb02c52
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links to known malicious redirector infrastructure, specifically 'https://crophysi.ru/strik?utm_term=hunter+x+core+resetleme'. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of malicious URLs within the PDF structure suggests an attempt to lure the user to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/strik?utm_term=hunter+x+core+resetleme In PDF document text
    • http://thesalle.xyz/suzuki_sidekick_engine_specsi46z1.pdfIn PDF document text
    • http://blaugrana.ru/6178474929ct77t.pdfIn PDF document text
    • http://rexapeduke.66ghz.com/how_much_is_infinix_s6_in_ghana.pdfIn PDF document text
    • http://afracheat9.xyz/kenmore_elite_he3_washer_troubleshootingbzpv9.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/mabariwoduwalevekisudewuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuronixo.rf.gd/metodo_descriptivo_segun_autores.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/33316345536.pdfIn PDF document text
    • http://lowemugujirowox.rf.gd/hamilton_beach_37548_rice__hot_cereal_cooker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/84974507589.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/technivorm_moccamaster_manual_drip_stop_coffee_maker_with_thermal_carafe.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/natanikotar.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/craftsman_professional_aluminum_motorcycle_atv_jack_manual.pdfIn PDF document text
    • http://jitemawuvefogox.epizy.com/ios_13_public_beta_2_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/mitejufovesijodubez.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/cisco_sg300_default_setup.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/does_dish_network_flex_pack_include_local_channels.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_off0000dd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7E 4764 bytes
SHA-256: 7f0d68b2885aa05225c0eb416a358137829c8e4c16fc715ac10e76703fce0979
font_01_sfnt_off0000eda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA0 10860 bytes
SHA-256: 0fd82142b62c59b0c3df0b44cabdeca25ff10939ab0334c4408ca9770f695937

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