Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ecc48710fe6a9d0…

MALICIOUS

PDF

37.5 KB Created: 2020-10-02 21:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 43aa442ad995b592dc5a96075eed216d SHA-1: 3c8a8ac793df774c0b771419f2bddd271bbd4736 SHA-256: 5ecc48710fe6a9d071ad381ea3de53a4082fb920303c80a7abf1efe7055b0201
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=6th+standard+english+book+guide+pdf In PDF document text
    • http://zuxumomup.diplomainprofessionalstudies.com/uploads/1/3/2/6/132680981/zoleve.pdfIn PDF document text
    • http://files.nothernlotusayurveda.com/uploads/1/3/0/7/130739776/9a6bfaec4bbaed.pdfIn PDF document text
    • http://zeredusen.mooiedecoraties.com/uploads/1/3/1/3/131379070/midufiritaguxamev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3da284-6143-4173-9e41-115acc655c5f/75228448468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9118eb12-2c82-4fc7-afe4-ec76cfa1bd2c/suxeji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b294a48-a2b4-409a-a82f-a59f6fa0f766/subuwewixuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9949/files/wayside_elementary_school_rating.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2634/5884/files/merozewatole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2031/5542/files/dragon_age_awakening_gift_guide_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b919f813-1948-459f-a088-ec86805aaf77/19356739204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14d122eb-512e-417d-9755-0c7096d12646/josinogunapevoferugijogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21195643-9cfe-4be2-b1e0-e59f481b165a/lawig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d9ab0af-c046-4278-a903-b5c56e4171ca/dobozogodeneburojubijixe.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53C6 5564 bytes
SHA-256: 340d866fe63268f7cf0fa0a9d6cfe0255ba9c73177f2cd9a536b6f43813d6ee3
font_01_sfnt_off000066a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A4 10148 bytes
SHA-256: 26cd92eb6394dbfe5fac18e9eafaeb42a463796ee10db3c21589c2eb95b3971c

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