Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a812a65a8be30b4…

MALICIOUS

PDF

44.8 KB Created: 2020-10-25 03:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 5b9d5345a2bac2354e2cf8c5a10d4cbf SHA-1: 4965ffb3b9c132e39d6e22c5457e76734a50302e SHA-256: 8a812a65a8be30b47ed9daa8aeef8cc09bbba1e21ab597bda30a1ba099ba8ac0
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/123?keyword=car+racing+games+for+android+mobile In PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/831f072bc99.pdfIn PDF document text
    • https://wimejevufafej.weebly.com/uploads/1/3/4/3/134379448/telavorumevumukakoso.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/sazusi-sanuwodu.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/de27a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce9bcd39-8444-496e-805b-4427d6eff631/42399151100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8debd88c-3fce-48ee-b09c-c0ade8239927/dugegoxadabefezojerame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d48b39b6-d683-4674-8aff-a78300729de8/jizadogoniwilofojidogad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/421ff28f-ba14-4573-aa70-e297b1255031/samurai_jack_episode_8_season_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4357573-a02f-4593-97da-0b8d486a1c21/kikogenivixavun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2439/8528/files/30518247771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5626/6905/files/division_and_the_remainder_theorem_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0863/8632/files/fodivajatetigudifoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8995/5489/files/aion_legions_of_war_gear_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/8365344206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7740/5334/files/59820601274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7888/4759/files/fibipigikadekutokuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/conversor_para_epub_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/standard_form_of_store_lease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5636/1379/files/93955959133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6088/7193/files/riseresuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0742/5699/files/31699514389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3508/5978/files/gozexumutizisobovagazux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6931/1650/files/23218166680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4794/3843/files/hedging_in_finance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5008/1690/files/8627463837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/fotobebokizuzotamapedewet.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_off00006ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE7 5384 bytes
SHA-256: 7aef4e67b08946056fb6ce5358455ec5cda3928fb4d9d9a6cfa81d70b8427616
font_01_sfnt_off0000811d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811D 10856 bytes
SHA-256: 3b51cdddc689d224d2432e5c1cc3342ced82be43ff1677e5bc35bf008d8e6f1f