Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbaf54f64660c6f8…

MALICIOUS

PDF

66.9 KB Created: 2021-02-03 06:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e2ea1ad3c76619030c5c0a3931222047 SHA-1: 6208b282207207dd0a14ec096ce3cf0084a5b663 SHA-256: fbaf54f64660c6f87f6c2edc183a4c29942ee60d308772a5b0234c95b74d73cf
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/aws?utm_term=bandarban+tour+guide+pdf In PDF document text
    • http://pubolovuwete.iblogger.org/ganawapivikanekinulo.pdfIn PDF document text
    • http://rujawobezixevib.iblogger.org/best_android_browser_with_dark_mode.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/zodererezuzuxi/rsync_server_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/sap_fieldglass_time_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/82163684782.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/87717538022.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/bc_transfer_guide_university.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/eccmid_abstract_guidelines.pdfIn PDF document text
    • http://wemiwapava.epizy.com/77047843173.pdfIn PDF document text
    • http://zevuketeno.rf.gd/oxford_bookworms_club_bronze.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/adb_device_not_found_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/debuxomoluk.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/a_level_further_maths_notes.pdfIn PDF document text
    • http://zezexobufimorum.epizy.com/garner_north_carolina_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/castlevania_aria_of_sorrow_android.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_off0000ca0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0D 5188 bytes
SHA-256: 930f1890bc47f8c695a73f876d48f95d8b7a81f684b2cecf28c5980140caa97a
font_01_sfnt_off0000dbc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC6 10224 bytes
SHA-256: d43c37d859e62a09057ae4416aea48f453c0c6acdd755cffe48f34ddbd455dd2