Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa75a06254602e5…

MALICIOUS

PDF

68.5 KB Created: 2021-02-26 21:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5cb38bbe568156ed9bfee2e6382f8b52 SHA-1: c63980be72346d0d2f8f7f379a43d11e0fc523cb SHA-256: 7fa75a06254602e5d41c0a24f1ccbf0635097661c50a2fd21970a8ed3f7dcd47
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/award?keyword=nlt+life+application+study+bible+bonded+leather PDF link annotation
    • https://kosukanawator.weebly.com/uploads/1/3/5/3/135304621/1360656.pdfIn PDF document text
    • https://zupufirelerige.weebly.com/uploads/1/3/0/9/130969681/5534954.pdfIn PDF document text
    • https://gewafikawesi.weebly.com/uploads/1/3/4/0/134016732/8e416b4482.pdfIn PDF document text
    • https://petirinupupa.weebly.com/uploads/1/3/1/4/131438611/6462407.pdfIn PDF document text
    • http://pitijebubitos.iblogger.org/sanitary_inspector_course_syllabus.pdfIn PDF document text
    • http://zinifezabi.iblogger.org/86121169938.pdfIn PDF document text
    • https://soravetojovon.weebly.com/uploads/1/3/4/8/134890923/voxakajimogunim-vekipu-linoledogig.pdfIn PDF document text
    • https://falojixij.weebly.com/uploads/1/3/4/8/134878909/1539975.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412413/normal_5fd04e560bfed.pdfIn PDF document text
    • https://kegegizexuf.weebly.com/uploads/1/3/4/0/134042356/kisixugisoritu.pdfIn PDF document text
    • https://gawotajar.weebly.com/uploads/1/3/4/5/134525297/dapag.pdfIn PDF document text
    • https://vidufatow.weebly.com/uploads/1/3/1/4/131438098/4684779.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/napoledunadigo/minecraft_hacked_client_1._5_2.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/66445412368.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/horizontal_timeline_template_html.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/zudedatefobajuj.pdfIn PDF document text
    • http://nexuvojof.epizy.com/octopus_gamepad_app_apk.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_off0000cc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC89 5452 bytes
SHA-256: e8dbf644084eb82e1828f398a39824a2d8e998d20774db0363aea1aad4bb8e42
font_01_sfnt_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 10372 bytes
SHA-256: 1e58f133878af83fc3e48a755abb1df852347ca3c52aada7e71962829b217bb2