Malicious PDF — malware analysis report

Static analysis result for SHA-256 acdc1ee9d7f00fc4…

MALICIOUS

PDF

74.3 KB Created: 2021-03-06 23:47:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dd75db4c179f2bd27e3af267b88f4a03 SHA-1: 2d4c26c7cdcb54806a51e236e7f09b8364758cb9 SHA-256: acdc1ee9d7f00fc4679956dc5e0874211d0195ddf076534326f89b74ec5e12a1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://xezojetit.ru/award?keyword=the+expanse+season+5+episode+4+online PDF link annotation
    • https://bagopilijesab.weebly.com/uploads/1/3/1/4/131438775/telafutowiwele_sagijovuwol_toponevoj.pdfIn PDF document text
    • https://tuwakunasuj.weebly.com/uploads/1/3/0/8/130874309/zanoviles-jozovax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373240/normal_5fedc0746fafb.pdfIn PDF document text
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/1890384.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489852/normal_6011bd95368c0.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/nilititonawafim/puxupirutajur.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/chakravyuha_kannada_full_movie_hd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/23153591783.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/ruzawut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca27e8ac-233f-4f33-8943-5c5becd49774/software_development_project_management_plan_example.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/analisis_y_diseo_de_sistemas_informaticos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a96e123-706d-4136-a424-9069894b56d1/python_list_comprehension_iterate_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/86632691530.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/what_are_the_five_parts_of_a_tree.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85153a0e-dada-4968-9c78-1ab283a96737/54343956061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef1488e6-67eb-4c64-8a00-c2d8cef79af0/skyrim_how_to_install_mod_organizer_2.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/kemiwujiroxen.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/carlota_perez.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_off0000e603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE603 5180 bytes
SHA-256: ebf9abcc4062ce2e3e7b310dd08cbe00fc23b6943f925169b8f4c132a8208f7b
font_01_sfnt_off0000f7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AA 10684 bytes
SHA-256: da71d646324d8ed83944b8b3906b429ed0faa8e107534c6aadece1bb7d437100

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