Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c65c1a261f500a…

MALICIOUS

PDF

42.2 KB Created: 2020-10-01 02:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7954a72edeeafb2d4d93f3542f243243 SHA-1: ba442cc0441daacd474777ab9ae1608a68f8f33e SHA-256: 32c65c1a261f500a3c32497f4ae0eee1a77468edd98fb98b7a390145d5810fbe
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://cctraff.ru/strik?keyword=baby+bucket+hat+pattern+pdf In PDF document text
    • http://nusajo.vitalhealthwoodstock.com/uploads/1/3/0/8/130814328/8227928.pdfIn PDF document text
    • http://files.sudancommunitylondon.com/uploads/1/3/1/3/131383743/2396a724639da.pdfIn PDF document text
    • http://vugobo.tomsmomsride.com/uploads/1/3/1/4/131406449/linadupibur.pdfIn PDF document text
    • http://files.teachhumanrights.com/uploads/1/3/1/3/131384070/f1b1c9186041a4.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/e9d9439f-dc2e-4b47-be7b-dd4061883894/jodavemagoxula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc7d83a9-e35b-4b0b-9215-b33f4bae1c1b/72227051318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17d75e6-98cd-4f2a-b7ab-78d9f5fbd6e8/fukobodezezedagola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfdaa7a3-3990-46ad-8d94-42825d526edb/nagabapuvam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef31decb-efe4-498c-97d6-a88133091589/53851534657.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eca6ca05-090d-4eef-93ce-5407978e42ca/mugebizeta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7737b1d7-1937-4acd-8d1c-5777240f2751/45244912982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/41098118119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6983/2342/files/lidatukatigo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A59 5112 bytes
SHA-256: 2dd1f7e17dd4b0a44889cac2e49995ee86e9eee910a58ec3f4056138c364fd90
font_01_sfnt_off00006bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAD 9996 bytes
SHA-256: 0b20383ade3fb30f672edcfb5f3b09444977e1dea4d779662a85ca487a850623
font_02_sfnt_off00008ddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDD 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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