Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32cc1681d937803…

MALICIOUS

PDF

50.2 KB Created: 2020-11-08 07:15:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 39ea9b424f97ba772df6a10db978be0b SHA-1: 5f5db49e4b7f8ea4ce745cebca9b7f329d446232 SHA-256: f32cc1681d937803156bbfd62675a08a4c1568722e460a8b0bd025c97fe872fc
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/aws?keyword=go+math+assessment+test+guide+grade+2+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482002/normal_5fa6f7fcd2a02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f8d702988f68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374686/normal_5f8e21ff2506a.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/7725779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_5fa73c3bc8b85.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/gezetavitas-sodakorazasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450046/normal_5fa2db619e5e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f9019eb15503.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bobikebuf.files.wordpress.com/2020/11/95135030775.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/13606418449.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/fill_in_the_blank_stories_online.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/murovoroxor.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/the_unit_circle.pdfIn PDF document text
    • https://wuzunujatipi.files.wordpress.com/2020/11/78058092719.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/florida_warranty_deed_form.pdfIn PDF document text
    • https://gopalov.files.wordpress.com/2020/11/51172652866.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_off000082de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DE 5588 bytes
SHA-256: c15924b83703c684074b52e756c52a1ab236e767727c60cc3b471cf50ec3eaaa
font_01_sfnt_off000095ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95AD 11104 bytes
SHA-256: 69185db7400032f9772d3f3c9bf76a1fe3c5d8ebcb0bdebf28da86aa88a14493