Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c400e3717a54fc9…

MALICIOUS

PDF

45.9 KB Created: 2020-10-26 18:50:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8feaaba3a69993c010f0be23ec4a8b13 SHA-1: fba7ccec9a787a12b0c6eb5143aaa58637b8afbc SHA-256: 4c400e3717a54fc915d92bf1adda0180cc13491464f6810b655885d0d77fc432
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=one+beacon+auto+insurance+claims+address In PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/junapew-xawikeletejo.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/megijiviri.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/dotiximuda.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/4576676.pdfIn PDF document text
    • https://gefelamanak.weebly.com/uploads/1/3/4/3/134353999/7145330.pdfIn PDF document text
    • https://pimupaxepa.weebly.com/uploads/1/3/1/8/131857198/76ec070.pdfIn PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/7582240.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/litunireluwidex-xabepod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_5f96ddcc56503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_5f95f324d0baf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f88d6101360e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000066d3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000066d3.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009bdc.bin)
    • https://s3.amazonaws.com/pusolefosex/xumif.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/carlill_v_carbolic_smoke_ball_company.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/78334033611.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/fundamentals_of_metal_cutting_and_machine_tools.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/official_bocce_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/nato_phonetic_alphabet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/43116274343.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/customs_declaration_form_philippines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/autoimagen_psicologia.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/the_modes_of_ancient_greek_music.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_off000066d3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D3 5132 bytes
SHA-256: 8fe771b1c9a2a79370fd67e339713f04bfdf11f32032a336d873f16f7e16f101
font_01_sfnt_off0000781d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781D 10492 bytes
SHA-256: 2e1c2d93db7d5dbba9d175f08e11933cd13ae0f4b12291faeec2ee59f8cd6a15
font_02_sfnt_off00009bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333