Malicious PDF — malware analysis report

Static analysis result for SHA-256 524590d2921713ae…

MALICIOUS

PDF

75.6 KB Created: 2021-02-11 16:00:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 364851dbbc471373b8b62b2fcede1aa3 SHA-1: 3e34d096da8f18ff8f5f4d6f0ab01d9e379f7a6d SHA-256: 524590d2921713ae7a1fb96bba1a19abf15bdc6bcabef2cce58b68c6842071ae
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wb?keyword=aashiqui%202%20full%20hd%20song%20video PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375515/normal_5fc96d5600610.pdfIn PDF document text
    • http://vizionsmc.net/game_throne_offline_mod_apk3gmz1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478415/normal_5ff228bf2fc27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458132/normal_5fd0601b064ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418381/normal_6024cf072071d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5fdb26b5c4e21.pdfIn PDF document text
    • http://exampl1214.com/tafuginiwumevakuwatosozsltua.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/vufuzewasi/fusowazimer.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/code_of_conduct_policy_template_nsw.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/marksheet_in_ms_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/nulls_clash_of_clans_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/mozonalowol.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/9762325858.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/rojadiwimimezewi.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/angular_formdata_c.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/annamalai_tamil_movie_bgm.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/wugejefifabagujosekilova.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/burnaware_full_version.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_off0000eafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFC 5380 bytes
SHA-256: 90b1167b559deef80212a0200881b1db3dee5a42428f20b4adf4df5c32278f07
font_01_sfnt_off0000fd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4E 10568 bytes
SHA-256: 13269e2ace1c5eeb5e5e49715737ad0989f33789f4488984eed4c9a679aa1b02