Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac8ac863a2dac3a…

MALICIOUS

PDF

78.3 KB Created: 2021-02-28 07:29:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 11ebc8bc3cdbad665ed59b8abcdbf805 SHA-1: c09fcb27de7efc4dabca2b64dffb3018dd07cfa7 SHA-256: 7ac8ac863a2dac3a06f587e2b415487f17c13417a491abfb2e4870e121434517
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://jumiwimov.ru/award?keyword=dork+diaries+birthday+drama+read+online+free+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365540/normal_5fccb086b3644.pdfIn PDF document text
    • https://cdn.sqhk.co/dokadajij/oFljayf/extreme_car_driving_simulator_mod_apk.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/jazobexutusoboe7jp2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415525/normal_5fcbdca290fed.pdfIn PDF document text
    • http://izzzaaa.space/the_star_of_bethlehem_video_onlineuq6j7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415934/normal_602623874372f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450721/normal_5ff90332443e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405419/normal_5fca27605d405.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/xamibudasagas/89169698069.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/tevelaxatasevutabixibojim.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/41375254972.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/video_song_justin_bieber_boyfriend.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/circular_flow_of_economic_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/resume_follow_up_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/brush_tool_photoshop_cs3_free.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_off0000f460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF460 5588 bytes
SHA-256: 492e357b7cddb67fc0f865c27ad611ffe32c43dfcde87ab27d203cbbb1953586
font_01_sfnt_off0001073e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1073E 10268 bytes
SHA-256: 3a26acc5bc507c28c159892fa01585742c1a97455ef165f8a9fae754c8dda394