Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba0e45f2a27c03a…

MALICIOUS

PDF

43.6 KB Created: 2020-10-26 03:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 1e6cd19f2ef1199dc33a4433bf7278bc SHA-1: 684ae2f69d8678be4e178a2a225b6685a61a373d SHA-256: 1ba0e45f2a27c03a73fbceb37ae835fec85d32c5ff7064035e2d23a2dbd845a0
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://ggtraff.ru/aws?keyword=adjective+order+exercises+pdf+with+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f8c0ea5e83b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f9388456ce64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5f91250b85ea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369152/normal_5f896c2267f99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f8b9ad0948e5.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/sodixegavubokob-sozifajavoledim-migakuxodeniza.pdfIn PDF document text
    • https://bubiwodepu.weebly.com/uploads/1/3/2/8/132815961/8f5e938c2cf87ff.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/8254588.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/tafus.pdfIn PDF document text
    • https://vuvofazomegudej.weebly.com/uploads/1/3/4/3/134329778/55015f781a512.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/1/0499/8361/9232/files/61666996250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6399/9167/files/anthony_burgess_the_wanting_seed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2036/2143/files/20721718765.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/al_quran_only_bangla_translation_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/kodafidofetepoxesowig.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/definition_of_strategic_management_by_different_authors.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/zaworujisoxisemu.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/tejixapi.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/vuxoniwifelizov.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/37605966746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8385/2695/files/vaferapixidufabiwebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/9026/6262/files/tabla_de_distribucion_normal_estandar_z.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6961/1418/files/19543574841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/tivefefuxewalivofu.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_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 5496 bytes
SHA-256: 1f78563c50e6ad9042c5fd80099ceaea0ead522836a0f2ca0300abfecbd8c052
font_01_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 10812 bytes
SHA-256: 73db065f8fe9e23a6f22dd522abd5396ac40dc20e3969d1c3fe8ffb394fe9945