Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88de07574f28536…

MALICIOUS

PDF

50.4 KB Created: 2020-11-09 07:34:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 25c76b4a8d396a44109ecef962b61feb SHA-1: b126c36d5fe3065831633c2667ef311416c34946 SHA-256: e88de07574f285369f0d7e3d76c1c9546557394d3eb31f564fa940f9cb3d5338
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=viva+water+dispenser+costco PDF link annotation
    • https://kifugezob.weebly.com/uploads/1/3/4/5/134529667/3008393.pdfIn PDF document text
    • https://pazolumaf.weebly.com/uploads/1/3/4/3/134356568/130207.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/jumapotedej-gidajebezeba.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/nazupukoloropuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_5f9c437ba05a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f9154030165d.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/pibajuwi/66512528186.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/51087853786.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/creative_director_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/1969591266.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/luzawar.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/90105804515.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/village_school_marblehead_summer_reading.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A1 5152 bytes
SHA-256: 0c9a1c9ab04e7541e7dbb1994cefeb7f2bd268ea3108256b54a83f3661416117
font_01_sfnt_off0000754b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 2140 bytes
SHA-256: a1c68180eae955d710b1f59d89b7b5bb1f22246194deffa7b9c3298859733f9b
font_02_sfnt_off00007f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F23 11204 bytes
SHA-256: 53ca9f166700f9bbf4c0a1c5c4ba150641241a81debe2d737125ce117d62a416
font_03_sfnt_off0000a591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA591 16132 bytes
SHA-256: 60f53b17f7925ac1818ac9336ea58fd206fea48872b5377b70e6fb8114080afd

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