Malicious PDF — malware analysis report

Static analysis result for SHA-256 56036d0fd47e78d0…

MALICIOUS

PDF

46.8 KB Created: 2020-11-06 15:11:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cbb1470d81c3f70d50792d0b745b6581 SHA-1: 06d6a1affe3ac1e9545a59b552f85aa804bbbc28 SHA-256: 56036d0fd47e78d093c5b7b8ba6f1cd489c001b0b9fc2a1279130a932c9fc920
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://traffking.ru/aws?keyword=pender+high+school+website In PDF document text
    • https://puxolulif.weebly.com/uploads/1/3/4/3/134356270/1516369.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401546/normal_5f992a7171df6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392854/normal_5fa0a50f2e47b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445743/normal_5fa345c726767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392444/normal_5f93f5034a980.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sezebepit/digital_electronics_tutorial_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2fd43f8-e309-47f5-bda6-1178fd59c4a1/1185832872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f434f4-5a66-4553-b7f3-33e29359030e/sakupunomegovikitus.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/99545665286.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/baron_trump_s_marvelous_underground_journey.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/yuki_sohma_birthday.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/kiwifibewex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf8eacc-da8d-4042-bda5-6279443fccc3/49969039194.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 5224 bytes
SHA-256: 702da4513b307fcf54724ae50d22431c5dcf4722549a5aec6ea9cd092d490a74
font_01_sfnt_off0000894b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894B 10884 bytes
SHA-256: 0c41e03dc1bd67e234a481e130442ef8690af827813ff12a3c72d6e016e6d4f9