Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5967957e4bec08…

MALICIOUS

PDF

50.2 KB Created: 2020-10-27 09:04:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e7dae411bc82ac38b011ab598fe5f639 SHA-1: 4bc401fcee62c73f1956d476bfe65de9869aa2fe SHA-256: eb5967957e4bec08437499ed4460492a61d3c3a785f2404937d7819744e5edb7
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://ttraff.link/pify?keyword=my+love+my+liege+meaning In PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/62ed2de.pdfIn PDF document text
    • https://dorubirema.weebly.com/uploads/1/3/4/3/134317311/zezusewadakupe.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/bavipexunofubup-fivari-sisibuxefew.pdfIn PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/boxuluf_lufazojinudubiw_nomazimofavud.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/4682934.pdfIn PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/2f9c3.pdfIn PDF document text
    • https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/8f6b5d39e6c7af.pdfIn PDF document text
    • https://kexazupaxi.weebly.com/uploads/1/3/3/9/133997339/maxawe.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/tigav-keponomisisize-nuwimulaxa.pdfIn PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/b4b6ecd73b.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/9309239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413578/normal_5f974c14ab18b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5f8e1b81c7901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5f9214fe75559.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e1a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e1a.bin)
    • https://s3.amazonaws.com/ronatiduzoxij/90863649999.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/android_application_development_tutorial_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/os_androides_sonham_com_ovelhas_eltricas.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/33370838320.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/analise_sintatica_em.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1318/3909/files/gradable_and_non_gradable_adjectives_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6105/1037/files/60364933126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7274/2088/files/14005129147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1734/7489/files/thomas_turino_music_as_social_life.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_off00006e1a.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000a51b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000a51b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1A 4900 bytes
SHA-256: cb2f6bc7d7a305ff7d92022092b72bbf03455a83734c7ede0287e5cbc0f4b638
font_01_sfnt_off00007ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED0 11268 bytes
SHA-256: 4137b8c9189ca2caabe8fba9361e1e9508bb0acb8b1370536a651620aeae9870
font_02_sfnt_off0000a51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA51B 16060 bytes
SHA-256: 2cca29575edef7a9880cf400a7847cc5df22ba1ee7edc19c7b9bafe603f6c979