Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbe5b6e68f8a184…

MALICIOUS

PDF

71.8 KB Created: 2021-02-14 19:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6d17d6b5ddd6318ff58ae9ed9cea04bc SHA-1: 50a88cbec59f9b049957d1f61b48ef2dd29989af SHA-256: bdbe5b6e68f8a184659c0911bf1deba95a0058f5a55dcb1f62d1da4793fd9275
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://baarspo.ru/wix?keyword=mi+general+augusto+pinochet+song PDF link annotation
    • http://lnstagramcopyrightmanagement.com/illuminati_card_game_full_deckikfzh.pdfIn PDF document text
    • http://rodsfish.club/2361533988b1ym5.pdfIn PDF document text
    • http://pedalini.club/guided_meditation_for_happiness_and_sleepo1p6y.pdfIn PDF document text
    • http://gelchlen.fun/fvtpl_balance_sheett8wd1.pdfIn PDF document text
    • https://wipikiriku.weebly.com/uploads/1/3/4/6/134696444/boxeniwi.pdfIn PDF document text
    • http://kvyovk.xyz/98007175107t26zv.pdfIn PDF document text
    • https://wetugaremuzen.weebly.com/uploads/1/3/5/2/135298520/2819758.pdfIn PDF document text
    • http://donenebexoxisik.22web.org/welutubafapo.pdfIn PDF document text
    • https://kesoxebexug.weebly.com/uploads/1/3/2/6/132681937/dapasugudid.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/fusidejebi/book_review_outline_format_college.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/14003868847.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/kaththi_movie_hd_single_part.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/compound_sentences_worksheet_for_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/94484881821.pdfIn PDF document text
    • http://teruwizirazi.rf.gd/cassandra_user_guide.pdfIn PDF document text
    • http://gekomulo.rf.gd/jogegisofisa.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/18307546138.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/niselijetejenerosilatijap.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/schneider_electric_altistart_48_user_manual.pdfIn PDF document text
    • http://sadigibesalij.epizy.com/xoxarasimovabakuxerasede.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_off0000dbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEB 5200 bytes
SHA-256: 291a0e9a39fbadcccc9eff661c7c989e5f9160e70c90b7d628cf6af729cdb8d3
font_01_sfnt_off0000eda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 11060 bytes
SHA-256: 30a24f74023924b87c8a5627f173f8b3f39088299450fbdeccf8c699f3be9940