Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a48b039c9225707…

MALICIOUS

PDF

71.0 KB Created: 2021-02-16 00:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4922dd61b301e1ee080d3f4ca15ddd88 SHA-1: 017f345aaaf5683f13accd8f38c94b0f4b3dcdbe SHA-256: 8a48b039c9225707e7cb766f6a5f2325087288e7d6da4446d2da76a5d2ec958a
136 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
  • 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://baarspo.ru/wix?keyword=did+the+bay+city+rollers+have+a+tv+show PDF link annotation
    • https://cdn.sqhk.co/pefevepufi/Cgchje7/mobile_recharge_offers_airtel_paytm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426073/normal_6005e8f6cafdb.pdfIn PDF document text
    • https://cdn.sqhk.co/raxizeki/jgj0EK0/w3schools_html_code_editor.pdfIn PDF document text
    • https://cdn.sqhk.co/titubebojek/yoDYidc/gta_san_andreas_car_mod_installer_for_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464070/normal_5fee1c1fe1464.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460944/normal_5ff9ac8903348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fd62848abca2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465007/normal_60174ebecf6f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374857/normal_5ffaa65bad7d6.pdfIn PDF document text
    • https://cdn.sqhk.co/sarunasol/iaP5ieJ/60511571129.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/wozowuledij/6161074149.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/vitovajuri.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/geekbench_4_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/physical_science_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/list_of_english_affixes.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/fupexakolikovo.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_off0000d9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B5 5420 bytes
SHA-256: c65c14e9cb006d3f1cdffa3fda3905d79489e9d52cf0c582eb7c9ef5678f21d5
font_01_sfnt_off0000ec36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC36 10108 bytes
SHA-256: 12ef4ecb0163b28f41e27aaccd0e9c4034d217680477049ae57b9dc2fc42a501