Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc28ce3f48a4623…

MALICIOUS

PDF

54.4 KB Created: 2020-10-17 02:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 98417f81a777982dfd85eeaf3824cadf SHA-1: 4b18afb6b18f795f09ef3ce72c0ea46426b1e296 SHA-256: 1dc28ce3f48a46231dde830d667e01419cb5a2318b534efec26340f80b5850ec
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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/wb?keyword=amar%20ujala%20shimla%20pdf%20download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f883621bf2a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_5f892ff0b6037.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f87555f41821.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/ec45b1ee736e.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/ae05d.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/0cbd7f35736ab.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/mokeki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f86f865dc8cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f888786c8d51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5f89ea7d67639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86fbc21d439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f8750da70293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f8739d5b3934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f8a22bba09c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_5f8a0e0673743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5f88da886b582.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7db1ee-d69e-4524-8764-b5065abf06ac/5239959371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d22f3f-965a-48e8-ad7e-3bd66199870f/99656757553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9f7dcfe-336f-4f1f-b2a4-1418b8b2556b/3697807704.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6076 5436 bytes
SHA-256: 5725e9daf685d194dd97167f7458e70b216e28ba5e8e539aa449a9b11e180da5
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10304 bytes
SHA-256: ed075905b30aa52cdf2c1070f1b3b3f41302989e0eec808cb1e8a6467ce4df12
font_02_sfnt_off00009637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9637 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
font_03_sfnt_off0000ab8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB8A 9460 bytes
SHA-256: 5dca9285274c74a208b7289a8c3673045edbd0fe19053cb514b5e0f5038e6871