Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1a52d519a2ea82…

MALICIOUS

PDF

71.4 KB Created: 2021-02-14 04:06:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cfeeee561ff43e730f201175a3eaf6bc SHA-1: a5dd1c943f5cfee1483816c22885e891f3178c4d SHA-256: 9f1a52d519a2ea8261521a5adf5a380c2209f829a1356488f419b6ef172115b3
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://yafferge.ru/123?utm_term=pioneer+woman+pots+de+creme In PDF document text
    • https://static.s123-cdn-static.com/uploads/4454286/normal_5feec3cb20608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382772/normal_6007db5eae470.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/mefonevimimix/human_resource_management_sample_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/event_management_budget_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/losunudodipumamatexok.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/chrome_plugin_embedded_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/lions_injury_report_hockenson.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/89428383793.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/pediatric_basic_life_support_guidelines_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/bamboo_lyocell_sheet_set.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/format_analytical_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/49115786096.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/tajuxobafatapevotolafixid.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/35705375296.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/surface_area_of_cuboid_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/28163762530.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/vovutumibuz.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/chirodini_tumi_je_amar_song_female.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_off0000dbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEF 5280 bytes
SHA-256: 4ee1a09fa8986303d8b6c8b72cea751b66c422c8e5386f1e9d122c61f7e2298c
font_01_sfnt_off0000edde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDE 10332 bytes
SHA-256: 5a2a7719d7edf73eb1f629a290277563a41dd5a92cd80d5d3c1584af5f038152

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