Malicious PDF — malware analysis report

Static analysis result for SHA-256 483447b54d5eb684…

MALICIOUS

PDF

42.0 KB Created: 2020-10-16 21:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0d8f42e4ca386f8ad5f9104c907f3c18 SHA-1: 0308e80aafd31e77b879b337f0e087650d5c6237 SHA-256: 483447b54d5eb684370760921adf2913a32d09146ca71bb1fd305b52d0cf7784
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://cctraff.ru/strik?keyword=unlimited+diamonds+boom+beach+androi In PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/pajaji_tumovupevojene.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/8afc37ef6728.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/8320e8e68f2fd3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f874bf3d2ab4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f89cf96e2f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374196/normal_5f89426b9ba00.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/9484d9d2.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/judosigenave-punatu-suzudosi.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/nolonu-pamizubezet-ramatalevokopa-jowememubowamag.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/1/0429/5180/3039/files/ddw_2020_abstract_submission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8437/0086/files/jensen_uv10_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2812/0217/files/chow_mein_vs_chop_suey_vs_subgum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6702/5829/files/beer_bottle_caps_crafts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0490/0805/0343/files/honeywell_hfd-120-q_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1086/1474/files/round_turn_and_two_half_hitches_vs_bowline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/ap_art_history_ancient_mediterranean_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5385/1039/files/decimal_word_problems_5th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9934b769-e2ac-4a39-80b1-2dbae235144a/lonafexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd229306-58b0-4cc8-896f-9a38ef0bba34/bomatijoxirowed.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_off00006655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6655 5308 bytes
SHA-256: 825208a748ebb4309c7a4588f859d2c9cc7f632fc0b6fafbc1bafb0d04b94d51
font_01_sfnt_off00007826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7826 10288 bytes
SHA-256: 7d1fb991c63a3c3dab7ce87299ebf862057d42f022ed647d5654d0acca1a966d

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