Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a6d1b4c9bcc2983…

MALICIOUS

PDF

66.8 KB Created: 2021-02-25 23:37:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 83151442556b92f215d76bcacf24a769 SHA-1: e5640d75ba1bc667ee6d7dd339ab912564518c07 SHA-256: 9a6d1b4c9bcc298333d9187f784a313d7f6d82037c340e8bdeefedeacff71edf
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=texas+saltwater+game+fish+identification PDF link annotation
    • https://domexuvuk.weebly.com/uploads/1/3/0/7/130740212/divobokive-lelebonex-pasudaxav.pdfIn PDF document text
    • https://gukamixi.weebly.com/uploads/1/3/4/0/134042495/8921671.pdfIn PDF document text
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/ee2f58f.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/hajj9P0/funny_video_download_happy_new_year_2020.pdfIn PDF document text
    • http://lalashoppen.online/39497807694wvltz.pdfIn PDF document text
    • https://wikafifej.weebly.com/uploads/1/3/2/8/132815388/6936860.pdfIn PDF document text
    • http://rizovog.iblogger.org/ntr_biopic_movie_songs_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/gipudeviwapi/aDVgexb/19562491403.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/jamuluvuvava/89050665505.pdfIn PDF document text
    • http://luxusuriva.epizy.com/bajirao_mastani_full_movie_filmywap_ganduworld.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/94747628710.pdfIn PDF document text
    • http://zisafaziga.epizy.com/bixolon_srp-_350iii_driver_free.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/exercise_synonyms.pdfIn PDF document text
    • http://kulaxukiju.epizy.com/how_to_do_modern_calligraphy_with_a_pencil.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/39082121325.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_off0000c8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E4 5544 bytes
SHA-256: 2cb061f0514c06622d8091971d100605d60b4a8c465816daf3afa6dd4e0ec34f
font_01_sfnt_off0000dbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAA 10144 bytes
SHA-256: 0e4d7e3415ae91e293a54d14abaed489cbc2fb895d508bf7d4b46caba9ffd9fd