Malicious PDF — malware analysis report

Static analysis result for SHA-256 6098334f7a803285…

MALICIOUS

PDF

58.0 KB Created: 2020-10-02 18:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0ca7ffe0d9494231f1af0ec0e00c5040 SHA-1: 503664e6f533e58ab4d65c6f3118f9a845e712e6 SHA-256: 6098334f7a803285875fe34a163c42ac09f52c3b0327cc17dfa8fbfcffbc4d89
194 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?keyword=ark+survival+evolved+beginner+guide+2018 In PDF document text
    • http://files.woodlandwisdombooks.com/uploads/1/3/2/7/132710794/fafenalewirigoveg.pdfIn PDF document text
    • http://files.blvdpub.com/uploads/1/3/0/8/130874246/6320886.pdfIn PDF document text
    • http://files.creativitymhc.com/uploads/1/3/1/6/131606309/kevadot.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://uploads.strikinglycdn.com/files/6078c2fa-0161-46e0-bd97-a17be2fa6ee2/89471757645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5967af52-b8f3-473a-9017-c68a85e642d6/91263795877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d437d9b-4b60-4371-abe9-a4d506506c7b/lujemudapawik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3cb565a-70b4-4c5c-b8ca-f89b662c1f03/40498881647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5252fb0a-5f6f-42a1-8571-a4019ddbbecb/jufesumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/965cc588-9a09-4e9b-84c2-826c146674ce/gufusebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7876fcf-82ac-4c00-b680-5e241dd6e4b8/16039509200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe9c48f-5b32-4c98-a50f-89239543aa02/nufoduvutelukizitanusate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02a5d8a-fb8d-4379-b107-a13969f812a6/9586993747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6875d719-69d3-42d7-a0e3-35c2f02f5898/zulasidoluloru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56dfe49f-b07c-4001-a6e2-aff68b817bf4/bovemixatudujofez.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000812d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812D 5568 bytes
SHA-256: 9798557df2bbfa3b9002b274a6fc1d3d0619ba47b98c859b835afe63f7879bdc
font_01_sfnt_off00009421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9421 10292 bytes
SHA-256: 3dd8a7db05a7520c36f4661f384f4bd6ab92febbcfb4787f52b8c587c140bbdc
font_02_sfnt_off0000b772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB772 16140 bytes
SHA-256: c86ec25fc5176ff29326d942c001ea6014b40b04356a9b1eefc9035b1c721a95
font_03_sfnt_off0000cc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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