Malicious PDF — malware analysis report

Static analysis result for SHA-256 410354d13a2baf81…

MALICIOUS

PDF

65.6 KB Created: 2021-02-19 14:22:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ef054d59a5e3de6f139c6ac789fbae11 SHA-1: 4b9c3d3a045f1d3843808b5bc550f9b5c8b7569b SHA-256: 410354d13a2baf81821402dd96ae654d30a46c69e976a15b8c165c992cfd07ae
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://druttle.ru/wix?keyword=download+apk+showbox PDF link annotation
    • http://effektzhizni.ru/901127001065k2q3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413454/normal_5ff27fe394f73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_601fa0d52fa39.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/6Gfm8gg/mahashivratri_2020_images_marathi_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5fe79907175eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473415/normal_60125cf57b609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_602a9aa68d6cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sarozaxag.epizy.com/movipofixebatufegufizi.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/juvodivaliwomela.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/cisco_umbrella_investigate_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/play_store_app_update_pending.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/sojupebesu.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/zisumuludes.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_off0000c326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC326 5316 bytes
SHA-256: c4883ccdb85be87134dac36443a2c8d6933b67564654ce8a725db94ec7d2cb4d
font_01_sfnt_off0000d54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54F 10620 bytes
SHA-256: c0827f871cbadb5b8255d4001eab57f9ee8fe0e51342e2cce1c1326df9866e5b