Malicious PDF — malware analysis report

Static analysis result for SHA-256 57399a389eefb29c…

MALICIOUS

PDF

46.3 KB Created: 2020-10-15 07:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7202e55ab58b201a9564b283d2670acf SHA-1: 6d1c288d9af40f67d6bb4605354d2708117d5ff8 SHA-256: 57399a389eefb29cfc0b9afee822ec7380a648f6de192997c485f329c99f1a08
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/123?keyword=hungry+dragon+unlimited+gems+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f87183b2e9c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f878cdcef24b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f87d013e0056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f874b9ab5a0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f871fea4f2dc.pdfIn PDF document text
    • https://site-1042777.mozfiles.com/files/1042777/juvumo.pdfIn PDF document text
    • https://site-1043248.mozfiles.com/files/1043248/faxuzosubemagubuje.pdfIn PDF document text
    • https://site-1040048.mozfiles.com/files/1040048/52386920589.pdfIn PDF document text
    • https://site-1043572.mozfiles.com/files/1043572/boxisudivileloxizodize.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1404/4323/files/61082189074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2550/9794/files/jazape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8529/2223/files/10.8_composite_solids_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80999bad-6575-4109-9c4f-ac259f4eb7dd/59814086470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960ba354-778f-4322-9a8e-ceaa0d77a1ac/87588266727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b73846dc-7a1d-4cb9-819f-7da41d9134c6/zagakufumokaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5677a340-ea25-4a93-97be-4179631961ff/86834456290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa73fa9-d409-4938-84cc-2bf9509ee988/86081166953.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df3a76b1-9f8b-4fab-baca-286e6e677de1/65652620195.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eae517a-45b2-4228-8d7d-2f01ec97d7df/27334751865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2040/2078/files/53551704948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5889/5254/files/77956360815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0020/4959/files/47796003042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6149/files/zusuzerolisif.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_off000072f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F4 5408 bytes
SHA-256: a5ccfaf70000e54d61d57b56943ffd497efbd106137799df88de83029e558f80
font_01_sfnt_off00008545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8545 11700 bytes
SHA-256: 7edcae0c9693488f39a9befc70e55df202b98d32d8b7bda09e9e48310f69d4ec

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