Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc303d0d11d205b…

MALICIOUS

PDF

42.1 KB Created: 2020-10-15 19:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9473b2dd0169272d136ab569532f5ae4 SHA-1: 380e8216bf5d190a95e3a3bed7e99376e7f3a3e0 SHA-256: 3fc303d0d11d205be3c3a825b0abec6f5d54b94cc85d0e8bc024dc2bf0b857f4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link, 'https://ttraff.link/pify?keyword=android+file+viewer+mac', suggests a lure to trick users into downloading or viewing files. The ML classifier strongly indicates maliciousness, and the presence of a redirector link further supports a malicious intent to lead users to potentially harmful content.

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.
  • 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.
  • 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.link/pify?keyword=android+file+viewer+mac In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8725d38ae85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8701b339f93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f87c752ddc1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f87040112343.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/fa2adb4e.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/9867142.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3355978.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/10c46977-3f0f-4ea1-9dd3-7a08921b8b86/38199075248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ab192fb-d567-4d62-834b-94a242d51d9b/kugenonejokiporisegotuxuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb6a903-1a17-4dc1-b117-078ff05c98b4/lajopiwefonol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2c8387-f169-4fde-84d1-9db9f5b46a94/nutixelovixameku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e07489c-50e6-4f79-a408-f94b88e584f4/zufewuvipez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/266f7ed0-8282-4a0e-b909-6b1caf1c229a/fafidoxapakakowobozuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7589/8010/files/ferrari_599xx_evo_horsepower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/segarasik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/bamboo_back_scratcher_and_shoe_horn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9197/4557/files/jatizevigeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4506/7684/files/setijil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5571/7271/files/zemediwaziwigizifisapelut.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_off00006670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6670 5128 bytes
SHA-256: 59d9144306667ee094ce214305182f5f802aa33ffb97c9ba83010c4b20e41378
font_01_sfnt_off000077db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DB 10516 bytes
SHA-256: bb1249935ac88ad8261c2a5bb4f0abf1f9bfeb9b39b60009d3221f2a4ba6b94e

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