Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce72b58bc7448395…

MALICIOUS

PDF

46.0 KB Created: 2020-10-10 02:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: a075f64f4d1ca3f08e6c9893df3f77e1 SHA-1: d85c6f44e9e58cfd3c4b66b559cf82735c65aa33 SHA-256: ce72b58bc74483954fbeaf21aa0cf3288dd1eb9d9436eb26be7e41174d5c9431
124 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=blackberry+cream+cheese+pie+with+graham+cracker+crust In PDF document text
    • https://site-1040597.mozfiles.com/files/1040597/3010426123.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/siranosilelimapemoxedapo.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/geridaxumuvazezu.pdfIn PDF document text
    • https://site-1040400.mozfiles.com/files/1040400/wivavalekone.pdfIn PDF document text
    • https://site-1044053.mozfiles.com/files/1044053/resezotakebulewuk.pdfIn PDF document text
    • http://detuk.teachillinois.com/uploads/1/3/1/8/131872048/powakedob_zijemavizewapo_xijulugozogox_difaxuxuresew.pdfIn PDF document text
    • http://jagegabox.surfsportsforum.com/uploads/1/3/1/4/131438282/b0ca15f35f48bd1.pdfIn PDF document text
    • http://files.gethsemanedavenport.org/uploads/1/3/2/3/132303282/5e62cbd60ab44.pdfIn PDF document text
    • http://files.southlandfamilyclub.com/uploads/1/3/1/3/131379371/e862cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0994/1415/files/cause_everytime_we_touch_i_get_this_feeling_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3067/0240/files/69586832789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1873/0902/files/experience_criminal_justice_nicole_hendrix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9047/7724/files/vivir_del_trading_elder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b45d8d05-29c1-42c1-8c85-387fa44577de/77761582902.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/589b3a8b-c048-4d7b-a2f0-78e5f80219f7/92437654398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b03cb6b0-7a44-4e5f-ab3d-e6fd5f55457f/kitinorowanovojo.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_off000072d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D2 5792 bytes
SHA-256: f04da3d2c30d2f6306720ce24ebaf9d47c4983b7400e05590946b014795e62fe
font_01_sfnt_off00008681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8681 10524 bytes
SHA-256: ee7b6268cf56319ce4a02347469e67363965621238cb2add49fba7728541e8ae

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