Malicious PDF — malware analysis report

Static analysis result for SHA-256 a45386e7bce10aa4…

MALICIOUS

PDF

67.3 KB Created: 2021-01-23 17:01:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d762d2404a3efabbea25d4bf092f2a34 SHA-1: 12761f319eb12da1949895fa3639956c62c7bd60 SHA-256: a45386e7bce10aa412797394a528077265d93e34921d88173e2c88b43a0a8a19
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://traffking.ru/wb?keyword=gbcca%20chinese%20music%20ensemble In PDF document text
    • https://site-1172703.mozfiles.com/files/1172703/addison_rae_call_video_edits.pdfIn PDF document text
    • https://site-1252401.mozfiles.com/files/1252401/wubibuwabava.pdfIn PDF document text
    • http://pilefubasusuz.iblogger.org/34480010945.pdfIn PDF document text
    • https://wobufijurix.weebly.com/uploads/1/3/1/6/131607063/kesakafujuw.pdfIn PDF document text
    • https://site-1256593.mozfiles.com/files/1256593/50287447428.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502833/normal_5fec03b3e473e.pdfIn PDF document text
    • https://site-1206689.mozfiles.com/files/1206689/zap_chat_messenger_app.pdfIn PDF document text
    • https://site-1177725.mozfiles.com/files/1177725/learning_activities_for_3_year_olds.pdfIn PDF document text
    • https://site-1174993.mozfiles.com/files/1174993/venta_arcade_dragons_lair.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_5fe7614853e4f.pdfIn PDF document text
    • https://site-1200530.mozfiles.com/files/1200530/medical_etymology_dictionary.pdfIn PDF document text
    • https://site-1179882.mozfiles.com/files/1179882/best_all_in_one_arcade_games_best.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/mijumomub/dishonored_2_mission_5_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/chiranjeevi_songs_free_all.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/xavepebu.pdfIn PDF document text
    • http://banumekopi.epizy.com/jufuvejinukumuneketazixov.pdfIn PDF document text
    • http://zifawikixeliba.epizy.com/bedford_academy_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/spore_forming_bacteria.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_off0000ccc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC6 5112 bytes
SHA-256: 56fc4ebe30d81c6472d22b65b05f408aeda51464f94506b4d5383aefce6b9afc
font_01_sfnt_off0000de06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE06 9996 bytes
SHA-256: 87696d07962e0fff2470328ac87ee7cc54647483a8ca1ba376420f6b13477656