Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ea57d0c59c1e01…

MALICIOUS

PDF

72.3 KB Created: 2021-02-20 18:25:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fd7c000f49a5e9021cfd15f64e31ec9b SHA-1: a03e845ab1590ad77ecabaea697ce58bbb79907d SHA-256: e5ea57d0c59c1e01e2562adecbb9a879ce8863f15a9c02a8fb42c8cc0ff5ef05
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=minor+hill+school+website In PDF document text
    • https://cdn-cms.f-static.net/uploads/4419437/normal_6013a03d35e56.pdfIn PDF document text
    • http://net-klientov.ru/annual_report_aeon_credit_servicedt3k9.pdfIn PDF document text
    • https://xonuguzuv.weebly.com/uploads/1/3/1/3/131382030/1945332.pdfIn PDF document text
    • http://wdd13.ru/xiwapagaritajodupevizeh4u87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387582/normal_601835bf1e340.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412582/normal_60052a2e58d90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_600d371ec993c.pdfIn PDF document text
    • http://shimano-stradic.ru/tufabosuw9zskm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384150/normal_5ffd7ad9f28c3.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/free_gotti_movie_onlinedyy24.pdfIn PDF document text
    • https://ponixetuga.weebly.com/uploads/1/3/4/6/134668384/wowazure-lebakizar-weduwubilu.pdfIn PDF document text
    • https://fedifugakebijir.weebly.com/uploads/1/3/2/6/132695471/c1f8f.pdfIn PDF document text
    • https://vojitimene.weebly.com/uploads/1/3/4/5/134596684/veveg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/senodiw/niwoxebozolomalelukavo.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/armitron_watch_wr330_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/kasganj_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/vuzezeluraraxenowepamawab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22B 4700 bytes
SHA-256: 43e29e51de45ea1cc376beb96bab2d8193abd1ed851cb201936238c832a69301
font_01_sfnt_off0000e229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE229 10400 bytes
SHA-256: 0028f628e277738ceab98e63650f1d7b10cd14dd44d8480a247596984abad3b3
font_02_sfnt_off000105ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CE 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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