Malicious PDF — malware analysis report

Static analysis result for SHA-256 5041a7ba209937e7…

MALICIOUS

PDF

42.7 KB Created: 2020-10-26 02:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 7d148885cf19e82d645adcbe4baf8d44 SHA-1: 77d6f041f82a1e2fddef64c35ddf9ad0ee073f9e SHA-256: 5041a7ba209937e799dcdb21ac23f52aafee646080ed226fb4e292b995cfe13c
134 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.
  • 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=les+adjectif+de+couleur+pdf In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • https://galebekamabe.weebly.com/uploads/1/3/4/3/134305591/disijowawe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_5f92fc7039b4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f87102768cc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f917a5881958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8ec4c114de4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_5f8dbdaf97270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_5f931236e7815.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/zaxawetawupo/tefewobasukulopibe.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/67058493326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6435/3945/files/english_tenses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6287/7096/files/vakofuzebenefagujifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9833/3091/files/moweso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9063/9000/files/kifobexezidobobudujufiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7782/3385/files/iron_man_3_full_movie_free_no_sign_up.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/tamil_to_french_learning_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/textbook_of_biochemistry_for_medical_students_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/importancia_de_la_calidad_de_vida_laboral.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_off0000649f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649F 5164 bytes
SHA-256: d1df7e9cc823b2200f2b30330f28ec6cc6b86b30f8b80790e4a40558393d0eaf
font_01_sfnt_off0000763e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763E 11752 bytes
SHA-256: d934fb705e1eec074392e0abb155e6050d3028182f28ced2d5bce6fa61669875