Malicious PDF — malware analysis report

Static analysis result for SHA-256 198024688b8a4b97…

MALICIOUS

PDF

82.6 KB Created: 2021-02-16 00:55:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dd48a5489e1de9019b8b08b07c918c41 SHA-1: e17642d08ba461fe8e094e8f06d7d1593bce490b SHA-256: 198024688b8a4b974fbb0418dbb0801aaa28c4ef448db61f64b304cf2a16566b
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=nikon%20coolscan%204000%20vs%205000 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409396/normal_602507238520f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369771/normal_5fcfb5b731607.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/aQzibij/vawezapurofaduzunewewosi.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/jfVKggK/goldlink_crew_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dogilijesiwu/ifjdigU/33917060844.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493245/normal_5febde004186e.pdfIn PDF document text
    • https://cdn.sqhk.co/tarekekog/f9bhbLL/gravity_falls_journal_3_decoded.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/iejhFt5/the_walking_dead_dead_yourself_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_600ddfcb4dcb3.pdfIn PDF document text
    • https://cdn.sqhk.co/ranotigu/ghjdFw6/jordan_11_retro_ovo_grey_snakeskin.pdfIn PDF document text
    • https://cdn.sqhk.co/bibilofefi/aprhcgh/82837276666.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/bisute/free_cv_template_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/1029445252.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/huawei_p9_lite_adb_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/xevobasavajuxasu.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_off00010657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10657 5144 bytes
SHA-256: 9bc4386fe47b93b26290f68af606e0f8ba68214972fafab309351dcd1a756357
font_01_sfnt_off00011807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11807 11056 bytes
SHA-256: f64bfb063389bf1eb3441e563ab9f99a2ae98bf484c0d44dbe5217cdedb4cbf6