Malicious PDF — malware analysis report

Static analysis result for SHA-256 744e320481ac631e…

MALICIOUS

PDF

70.2 KB Created: 2021-03-01 03:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 84f3fd3abc9eb89fc27a0c2146b0e7d1 SHA-1: 0cd10a9848aa5915ef61620b20952a587c84d66f SHA-256: 744e320481ac631e45d99c328d20b855f9461778f3e51381d006da866c4dec81
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://botokaw.ru/aws?utm_term=riders+of+the+purple+sage+1996+cast PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375908/normal_5ff7aa498a31b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370269/normal_602b61c2c76ee.pdfIn PDF document text
    • http://tokio-2020.fun/worikeremifuwimadakuslzy4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_6036c81a416c6.pdfIn PDF document text
    • https://cdn.sqhk.co/seseniluvus/gcjghf0/40321190955.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/eeijrgi/wegexuxakafuviz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444853/normal_5fc6cd4486536.pdfIn PDF document text
    • http://sqrab.top/75134372037u7fl1.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/gd69Y4I/sepegebiwabotaboliden.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449422/normal_6005fd583e31f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_5fd5f3531ef9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_5fda520f2949a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412592/normal_5fe3c82312126.pdfIn PDF document text
    • https://cdn.sqhk.co/fufafetuno/bibMhjE/csr_classics_hack_apk_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/jhhcnjh/55625753292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454302/normal_601d128161446.pdfIn PDF document text
    • http://repair-planshetov.ru/download_clash_of_clans_hack_new_updateqk2qf.pdfIn PDF document text
    • http://ulekschool.online/17352308986v4jju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD210 5784 bytes
SHA-256: a3d546647d095a618b9f24902a55a58544504636773618f61a28c55d30df1938
font_01_sfnt_off0000e5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 10724 bytes
SHA-256: fb6a5a93214498b42cc69ba9089ce38c0615b56517d08f8c4fc42cf78625d672