Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc58b91e48cb70…

MALICIOUS

PDF

57.1 KB Created: 2020-08-19 07:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 6faaa957504c41d9408443eb685356ee SHA-1: 2b9704526d90a43890e8d7cbea7b374e230e70a5 SHA-256: c5dc58b91e48cb70a4fcae4b3c1f1cd75b424b405ab51bfb31d53b2da90e2ca6
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://ttraff.cc/pify?keyword=brochevarevarura+telugu+songs In PDF document text
    • http://tubaji.simplybeautifulpg.ca/uploads/1/3/1/4/131437792/61294.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://cdn.shopify.com/s/files/1/0427/8353/9366/files/luloxokekofisodonabopewum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/campbell_biology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/leberefubamokuvirowejiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/gavowakepoludopepubigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/kisobekor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/toladaburarizupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/44676819140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/muvapubojat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1866/files/98195255018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/80739958714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/autocad_variable_epdfshx.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_off00007782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 5172 bytes
SHA-256: 942b1243a34d939b1baad8d57d9eab0cbe9fc1bfa04a965b8977bd70eb08cc6b
font_01_sfnt_off00008917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8917 6508 bytes
SHA-256: 02364512871381208f86fc23474e900d03ee8933169159d6516f09c7ab4f4866
font_02_sfnt_off00009e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E27 10876 bytes
SHA-256: afd550cbf60cf73baa7ec6183a2018f6fae65a3b7dcb71c8ee3e3c8e4d4547f5
font_03_sfnt_off0000c1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C1 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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