Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96b28d2c891c6d0…

MALICIOUS

PDF

45.9 KB Created: 2020-10-06 11:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 730a26a46c17fd616c7c72a3fad0b295 SHA-1: d4c9bbe8d5551c9ae3deb53a7454a6841119e6b9 SHA-256: d96b28d2c891c6d0b51fb37d49d3872f41d9a2965dadd7dd21990b991c761ac9
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://gettraff.ru/strik?keyword=salvar+cart%25C3%25A3o+cnpj+em+pdf In PDF document text
    • http://files.savejonesstateforest.com/uploads/1/3/1/8/131856392/2322414.pdfIn PDF document text
    • http://bugum.splitteralpine.com/uploads/1/3/1/3/131379741/704808ba0a1bbb7.pdfIn PDF document text
    • http://files.carolinarunningcompany.com/uploads/1/3/0/8/130814209/cad3c1.pdfIn PDF document text
    • http://jusibuzim.artoutofdakota.com/uploads/1/3/0/7/130738720/1345235.pdfIn PDF document text
    • http://files.yogatuned.nl/uploads/1/3/1/3/131379205/5566212.pdfIn PDF document text
    • http://files.bakerstreetuniverse.com/uploads/1/3/2/7/132740194/nuwokuliruxegage.pdfIn PDF document text
    • https://site-1039995.mozfiles.com/files/1039995/53197891376.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/vukakisusi.pdfIn PDF document text
    • https://site-1038490.mozfiles.com/files/1038490/217734178.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://cdn.shopify.com/s/files/1/0441/0372/9304/files/dopedosuduwafeguguxuluku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6103/6444/files/angry_birds_2_hacked_version_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0780/2518/files/24204531637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6533/0850/files/55311106271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0847/3763/files/public_partnership_mo.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_off000064ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 5420 bytes
SHA-256: 9b134f8688fa24017207d9035aaff1c8a2496bfd912c9e9bb96078c8d60eb1a3
font_01_sfnt_off0000768f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768F 12052 bytes
SHA-256: 3580c6bbb6bdd14e89ea2de18e5806fe729209a44f54bef021560a42ecaf66a6
font_02_sfnt_off00009b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B53 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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