Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3a41ed2f89e450…

MALICIOUS

PDF

69.0 KB Created: 2021-02-13 16:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bc932760d0d13b1a7ad782b5840ca60c SHA-1: e3d309b08e46f510b05f7b60331ee9eb18dc7995 SHA-256: 5e3a41ed2f89e4503e308f19fd4970f6de8496bcfd596d4d4c0acdb956aa4a1b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/wix?keyword=match+each+term+with+its+definition+or+description PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393019/normal_6011fb795787d.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/4hjhd8k/warriors_orochi_4_ultimate_character_unlock_guide.pdfIn PDF document text
    • http://wubosuvim.22web.org/bomb_calorimeter_diagram.pdfIn PDF document text
    • http://nawireg.22web.org/anime_chuunibyou_take_on_me_movie.pdfIn PDF document text
    • http://nuredalad.iblogger.org/greenland_ice_sheet_crater.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/9Jigl2m/pekewopolosej.pdfIn PDF document text
    • http://ragixanomus.iblogger.org/14624441142.pdfIn PDF document text
    • https://cdn.sqhk.co/ganidabizi/a1vibje/exploration_lite_craft_mod_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/54269526416.pdfIn PDF document text
    • http://doveweluzabakiw.rf.gd/54340784621.pdfIn PDF document text
    • http://ralomefin.epizy.com/yaquina_bay_fishing_report_2018.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/fishing_guides_in_everglades_city.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/consistency_of_standard_cement_paste_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/brick_breaker_apkpure.pdfIn PDF document text
    • http://nasewuji.epizy.com/29644672706.pdfIn PDF document text
    • http://tunowik.epizy.com/96983010269.pdfIn PDF document text
    • http://ruvaseravijuged.rf.gd/25636657270.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/nopujosavelomupid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66D 5248 bytes
SHA-256: 0a0c99abb2a8176cf6e6a675ca5870f73284debe3950a15c3443714177cd8c4d
font_01_sfnt_off0000d82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82C 9448 bytes
SHA-256: 60ef5e3decc5b549e31d2801b36ff03e82110784139f3a89510305960547dca8
font_02_sfnt_off0000f86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333