Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a8cc7e57047616…

MALICIOUS

PDF

75.0 KB Created: 2021-02-27 23:31:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c5c76b672f88238f9e2491269c96beec SHA-1: f5fab33d7e08978cff232574d09cbe9c3a964062 SHA-256: 03a8cc7e57047616716fefd4ee2c4b62ff980933acede10886c45095adef4df1
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://maypoin.ru/123?utm_term=proctor+silex+microwave+start+button+not+working PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389370/normal_5ffef88721f1b.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/j1gh9ww/dapesuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413575/normal_60210da45abfb.pdfIn PDF document text
    • https://cdn.sqhk.co/lelogusobade/bkbTxic/ziseruforizamip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463812/normal_5fff470a71cb9.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/ggifiaV/buzzer_beater_nba.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/hxghijM/blackpink_lisa_weight_and_height.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499629/normal_5ff07b2540741.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/xunilukegez/virokananukadulafaf.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/email_template_editor_that_supports_html_gmail.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/babamizolodikonoj.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/nejelabiwos.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/wuvamule.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/avengers_2019_movie_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/adobe_after_effects_element_3d_plugin.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_off0000e70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70D 5544 bytes
SHA-256: 0957fadf28be015f91bc1c7189d775cddcea992b8d178b2ed18bf4cca3529f03
font_01_sfnt_off0000f9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F7 10732 bytes
SHA-256: 389360cebe82e27a01549746843090092680c534335d3f37e82c76c153afa2cd