Malicious PDF — malware analysis report

Static analysis result for SHA-256 18fdf43daa536460…

MALICIOUS

PDF

62.0 KB Created: 2021-02-13 14:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f4dea23d1a842490a58bd8263e6b7640 SHA-1: 9dc25da8a88532976cd3b685dfc4638a3f7a99cc SHA-256: 18fdf43daa536460d667cd475bdc1992954a653906916bff68dc9c71961b4a72
136 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
  • 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://jacksth.ru/wix?keyword=matchbox+fire+truck+5+pack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446931/normal_5fe87a8f2a375.pdfIn PDF document text
    • http://copyrightshelpcenter.com/biwawurevasudusitonivowohy0iw.pdfIn PDF document text
    • http://prosale.company/baking_sheet_paper_linersuord8.pdfIn PDF document text
    • http://gobigs.space/75891556861oka1o.pdfIn PDF document text
    • http://netewe5.xyz/candle_light_full_video_song7y0kt.pdfIn PDF document text
    • http://pesale.pro/boomerang_apk_latestylyya.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469634/normal_5fce580a08b17.pdfIn PDF document text
    • http://mx50off.pro/pemomu9ikjb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452850/normal_601b8b50d54e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5fca27a3acffe.pdfIn PDF document text
    • http://gatorama.site/restaurant_renovation_showr5uou.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/petubapizo/english_songs_app_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/current_transformer_saturation_characteristics.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/92900786263.pdfIn PDF document text
    • http://lexuwusifo.epizy.com/deviation_from_child_support_guidelines_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/sutulodixapasun.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/14404168120.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/bboy_funk_music.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/finding_equivalent_fractions_worksheets_6th_grade.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_off0000b542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB542 5296 bytes
SHA-256: db0a01e7d894baa327f35e137cc3cae997e4bc5a301bf34fc2bb2c8a733739db
font_01_sfnt_off0000c757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC757 10052 bytes
SHA-256: 46132a5e90b3f5d08d5461bb5be84f491fe3cb839b0d58b39737e6cbcf3a736e