Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f64133df117a90…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 20:31:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6bcc5e7d7ce663f2d12df0f350c081c4 SHA-1: 8c6ce859392524632b7bbf6e2cc4f870bf4e6459 SHA-256: b6f64133df117a90287013e5fc912222095d053be14cc4e5a2b745ca657bdd16
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=bsa+dog+care+merit+badge+worksheet In PDF document text
    • http://fitit.space/cuantos_milimetros_es_un_metrobqavx.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/W0QOvGA/wwe_smackdown_roster_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/7iijfhj/gifafebazenebamitenunej.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/0mjf7j5/axes_io_mod_apk_an1.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/gifiigh/35561952073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387711/normal_6032317cb9f1c.pdfIn PDF document text
    • http://eurofamily.pro/halk_iiri_rnekleri_ve_incelemesizhknb.pdfIn PDF document text
    • http://hq-cleartv.info/fandango_michael_mclean_sheet_music7q9ko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481411/normal_5fefb55509ed1.pdfIn PDF document text
    • http://themarkuzmusic.com/somewhere_west_side_story_music_sheet3fzuq.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/is_mild_steel_sheet_magnetic5n6c8.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/ganubatebedoxez/88293305542.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/game_galaxy_attack_alien_shooter_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/hipaa_violation_reporting_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/febow.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/tudis.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/verystream_punjabi_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/blank_half_volleyball_court_sheets.pdfIn PDF document text
    • http://matezule.rf.gd/79004318769.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/transformer_bumblebee_voice.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/39869857900.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_off0000de9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9B 5664 bytes
SHA-256: d58c59f7ab2cf5388b71ea963e00193720d363437a1e386ce1839797d478fe71
font_01_sfnt_off0000f1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C7 10984 bytes
SHA-256: 7cce5d9f811c505895fd6983f380233d9220fedafd69e5841dc5b898e5b27910

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