Malicious PDF — malware analysis report

Static analysis result for SHA-256 03bace44ec5c44b7…

MALICIOUS

PDF

70.0 KB Created: 2021-02-27 20:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bf41988147f67b345970afd21554308c SHA-1: 03540f2f951a9b9dcbb3e54eb42e87fb0b7d4ad9 SHA-256: 03bace44ec5c44b71788a63e9922cf0f5b1a9fc991bf62c638876d60f9ae2942
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/wix?keyword=kill+shot+bravo+apk+obb In PDF document text
    • http://uniques.space/1965874920154pmk.pdfIn PDF document text
    • http://vengriya.space/bless_of_magic_caster_infinity_wallv9h9p.pdfIn PDF document text
    • http://dreabling.online/8327965487eyiu5.pdfIn PDF document text
    • http://amorexpo.com/improve_left_hand_dexterity_pianoqkda7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/xokejapajujipav.pdfIn PDF document text
    • http://faxunarin.epizy.com/action_essentials_2_plugin_free.pdfIn PDF document text
    • http://rilenipavow.rf.gd/reposo.pdfIn PDF document text
    • http://wulitebajanuba.rf.gd/bus_games_free_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/chemical_changes_gizmo_quiz_answers.pdfIn PDF document text
    • http://tulinavosubod.rf.gd/allianz_global_assistance_oshc_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/spcc_plan_template_epa.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/how_to_change_lawn_tractor_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/kujudamudapetaxofokuv.pdfIn PDF document text
    • http://tamakibegotilo.epizy.com/arquitectura_japonesa_contemporanea.pdfIn PDF document text
    • http://fobajoruvibu.epizy.com/police_report_search_california.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_off0000d7de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DE 5140 bytes
SHA-256: b077f34b73ac44412b9e5d52899dd05d9945f26b3650cb3c59ed96a9ef23ed15
font_01_sfnt_off0000e950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE950 9940 bytes
SHA-256: ce2c8f919a86f7bc1a73a12f20505aa8cafcb707dd58cb8480d53aa4cfacdebf