Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f77d500ea96ccda…

MALICIOUS

PDF

77.0 KB Created: 2021-05-12 09:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 95455825aa4b5af65a12bd5c4278a975 SHA-1: caaeecac14d0ad62776b669939edfebea7684193 SHA-256: 4f77d500ea96ccda0988b6de10f4aac99ff6bd8a628b4612cba5a36227c5bd75
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of a redirector URL suggests a phishing or scam attempt, likely designed to lead the user to a malicious website. No scripts were extracted, but the PDF structure and embedded URI point towards a phishing lure.

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://kuzutuzo.ru/strik?utm_term=can+a+person+have+two+living+trusts PDF link annotation
    • https://komijeji.weebly.com/uploads/1/3/1/6/131606126/a49feff7cdfcf5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5ff6248953515.pdfIn PDF document text
    • https://rawunixu.weebly.com/uploads/1/3/4/5/134527334/1749185.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/hZzvYEi/funny_video_whatsapp_status_download_sharechat_telugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_601f03fcf1bd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469617/normal_6006bc707edc9.pdfIn PDF document text
    • https://waxebusesu.weebly.com/uploads/1/3/4/7/134770319/77b045fe682968a.pdfIn PDF document text
    • https://cdn.sqhk.co/faxinomitux/hegcTgg/new_ps4_vr_games_coming_soon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404524/normal_5ff21bca07463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489969/normal_5fe63c675bbd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403413/normal_5fe501dfd8984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5fe6d7f26ea6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468253/normal_60089b97aca55.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/gafedupeba/69000874898.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/baghban_movie_all_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/i_pace_top_speed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9944c955-1ae0-446c-812e-a4e033720cc9/wugifamunafilupotit.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/lamuwibogeriresosix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a0ca8a-87cb-418b-a1bd-adf61f7307e6/wadiduxijojuxoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a1edde-a48a-45ba-8feb-26b99bf90c73/que_significa_soar_que_vomitas.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_off0000f01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01F 5140 bytes
SHA-256: cb8a11f6066983063b81076f3941085230442f43f7673acc144c224d818fef88
font_01_sfnt_off000101a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 10956 bytes
SHA-256: 5af96b19f11a6392ed4bf2af0edcad0912c4765550f4f9c57c2f2d43cbfb51f5

Open this report in the interactive analyzer, or submit your own file for analysis.