Malicious PDF — malware analysis report

Static analysis result for SHA-256 569f4dc7405dcc15…

MALICIOUS

PDF

56.3 KB Created: 2020-10-29 07:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1cf20948120a6b5cde258abc7fb9002d SHA-1: 4eda417b680d24b47adbf74ac9f8fb401e64a6b0 SHA-256: 569f4dc7405dcc1555d488df981b924ee5ed61624e78dbc598ee825b6c9a6218
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://cctraff.ru/aws?keyword=ramachandraya+janaka+lyrics+in+tamil In PDF document text
    • https://zodovamerevi.weebly.com/uploads/1/3/4/3/134316438/vanujamugiwifo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418184/normal_5f9a19c261808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f936a86eb45e.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/5427261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376371/normal_5f959ddc20e79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427809/normal_5f9a257b982bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_5f99f07e22a0e.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/tusiwisotoloko_dizofipa_nuxer.pdfIn PDF document text
    • https://wokusozevopiwaj.weebly.com/uploads/1/3/4/3/134381386/5022458.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000063a8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000063a8.bin)
    • http://fedorahosted.org/lohitIn extracted file (font_01_sfnt_off000075fe.bin)
    • https://uploads.strikinglycdn.com/files/0cdfe780-8b80-4a3c-883c-9757a55e0d08/htc_desire_310.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/33229011007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050d25ef-79e9-47bf-aed8-65905c0a31e5/1697166672.pdfIn PDF document text
    • https://s3.amazonaws.com/vibove/nojagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8798330-a521-44b5-a669-2649e742a572/59684761466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4345cd3-7266-4671-a4e6-ee90b2c0cefa/video_converter_full_kuyhaa.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 extracted file (font_00_sfnt_off000063a8.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 5428 bytes
SHA-256: 772a49bc9151688ce13bf46e9f61b76d62321f4e4f5f3d0b628814a1ea8a4413
font_01_sfnt_off000075fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FE 26860 bytes
SHA-256: e538bd85292228eee3e1cf43bf954afa5e977c56e8dce1b58ac1ca7863818de9
font_02_sfnt_off0000aeef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEEF 11360 bytes
SHA-256: 031a591c5423a6afbb62f1faaa0e21a7b18170d850b626cb0eb2d1a273b6541a

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