Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b4712d5d642af1…

MALICIOUS

PDF

37.1 KB Created: 2020-10-29 03:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: decb7063e8b64bc852e05e694b1a15b1 SHA-1: 4a0ed1cc6f79fee142255a86f2a0b222c9a43060 SHA-256: a0b4712d5d642af1836cf4cd559e3bed5b6dd377017ef891e4e73ea97def6bb7
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://ttraff.cc/123?keyword=macroeconomics+charles+jones+4th+edition+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_5f9358f37c1fa.pdfIn PDF document text
    • https://gelekale.weebly.com/uploads/1/3/4/2/134266195/lukatamus_bibasi_latomu_jawotaxim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_5f91eb8977605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_5f8e6037b9b12.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/6182670.pdfIn PDF document text
    • https://derewoju.weebly.com/uploads/1/3/4/3/134319287/2862ed.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/pokobu-pidoror-pekirez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/487d644c-88d3-4911-b6ff-eac1bb95d1b5/sujiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/3722849296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/umbilical_hernia_infant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5188db7-c02f-4e15-a251-8cfa0142f57c/acceleration_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2072/4635/files/89769325118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e32e93-f8de-423c-bb76-42bf13d9a981/blend_austin_isd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/85850142245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd09e69-9724-4900-823e-51850a9a7c81/72885787984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48692836-8b2c-4bac-825d-82303319e65b/45221165103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2729/9002/files/pes_2020_pro_evolution_soccer_offline_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea6b4c74-4921-42a7-8869-82bc59ec99c3/66092231216.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_off000050a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A7 5656 bytes
SHA-256: 6dc817b7b8bf800d8728dc3f5016445478cd4121a4d053821e3d14dac7ca3efd
font_01_sfnt_off000063e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 10284 bytes
SHA-256: 6f62641ae629ca016b9be286e9ed3f636f138723046821da3d656496bd723f31

Open this report in the interactive analyzer, or submit your own file for analysis.