Malicious PDF — malware analysis report

Static analysis result for SHA-256 f83bc73835d8d718…

MALICIOUS

PDF

68.8 KB Created: 2021-02-11 22:50:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a649042d31565220692ec2785adf5584 SHA-1: 8ba1983d52e9c92aa1658c04cafa11bff8162e3c SHA-256: f83bc73835d8d7187b7b3aa27ca8624d3149d10fa2cbe81e26aad1fd0724b72b
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/wix?keyword=the+good+sex+bible+pdf In PDF document text
    • http://sijodegovawa.iblogger.org/antonyms_and_synonyms_worksheets_middle_school.pdfIn PDF document text
    • http://bepebeku.22web.org/xarureletezewakote.pdfIn PDF document text
    • http://belixawotid.66ghz.com/kitanagidotutewajukuwizuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5fcf50d168118.pdfIn PDF document text
    • http://shopsmmv.site/jungle_adventure_game_download_javagtema.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366405/normal_5ff163a7d0891.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/jezekemunidup/vertical_timeline_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/tengakhat_dibrugarh_weather_report.pdfIn PDF document text
    • http://xamojivegubon.epizy.com/96683394909.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/benchmark_computer_performance_online.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/centrelink_medical_report_sickness_allowance.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/aasld_guidelines_acute_hepatitis_c.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/60631307258.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/using_the_veritas_mk_ii_honing_guide.pdfIn PDF document text
    • http://fupotuz.rf.gd/set_alarm_using_alarmmanager_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/edelweiss_financial_services_limited_annual_report_2018.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_off0000d29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29F 5152 bytes
SHA-256: 97d26d25ebb040efd567c0a7dcfa839fb62e189097be796915b9e3c4f9154699
font_01_sfnt_off0000e42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42B 9960 bytes
SHA-256: 489638b7bb5cb58cac5c80045031979aed356e35ab342cfb94e4dd09f69f8be0