Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12188c197193bcb…

MALICIOUS

PDF

66.5 KB Created: 2021-02-13 14:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ca3b02d134da734ca87f4d7232c49ab7 SHA-1: 1e5be82a2a3a1305e478b4d55e7622eda79f9c27 SHA-256: d12188c197193bcbd77f1b5c08ea2d460fa96d795bf1b26773431f3a7da88b7d
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://bologen.ru/wix?keyword=express+numbers+in+terms+of+i PDF link annotation
    • http://mosaniz.22web.org/picsart_tutorial_app_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452621/normal_60005b598187f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448985/normal_5fdb7104475c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469827/normal_601ec1901c273.pdfIn PDF document text
    • http://sagokorize.22web.org/acute_upper_gi_bleed_guidelines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5fd14d3833aa9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500665/normal_5ff318797a921.pdfIn PDF document text
    • http://futotesu.iblogger.org/cymera_apk_1._4._7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503692/normal_600206fa01448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454306/normal_600fb631212de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454421/normal_5ff2c569de1dd.pdfIn PDF document text
    • http://kidepokapila.22web.org/39811159585.pdfIn PDF document text
    • http://pitetivedu.iblogger.org/punuxas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420235/normal_5fffffc7ae682.pdfIn PDF document text
    • http://futudobofexile.iblogger.org/the_odyssey_book_9_questions_and_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426697/normal_5feb9a79daba2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412897/normal_5ff11334d998a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolifusekaxug.epizy.com/41760360880.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_off0000c98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC98C 4968 bytes
SHA-256: 045b338df6389312afe0d5a304cf6c04f7b9635f2bd94fbfc348293309953dab
font_01_sfnt_off0000da62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA62 10176 bytes
SHA-256: e3b21e41947efd310243443ea3915bb8084b7457debfb4ddfd8b7406c3e81c36