Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a650f0967480bca…

MALICIOUS

PDF

40.9 KB Created: 2020-10-03 01:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b1d6c0c897a9f16295d5478d5301517a SHA-1: 751c35aedf90d87a5318336689bb72f5bfc977f2 SHA-256: 2a650f0967480bca2271fbeae714ec2296a05291fc7da8dc8f76c72acec4422f
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=anamorphic+drawing+tutorial+pdf In PDF document text
    • http://files.saraswatiadornments.com/uploads/1/3/1/3/131380612/monoxozo.pdfIn PDF document text
    • http://widese.chefmikescharcoalgrill.com/uploads/1/3/2/3/132303001/zewakusuxovozi.pdfIn PDF document text
    • http://files.airestdion.com/uploads/1/3/0/9/130969260/a04e805.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/1/0498/0293/6477/files/46662441668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/jaguar_pictures_to_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/13362400193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2983/files/57753680763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/te_gusta_o_no_te_gusta_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7561/1040/files/autocraft_gold_battery_warranty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/starbrite_tattoo_ink_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/6_person_instant_tent_core.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/mujunibavitutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8234/5367/files/61818427682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6498/6266/files/fufutunozaboralarapusope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/learn_2_fly_unblocked_soenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9629/6610/files/kaun_banega_crorepati_questions_with_answers_in_hindi_2017.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 5472 bytes
SHA-256: adc40aecadd6aaf93288e66ea4f2fc8e9ff6f43f97bf18dabc980021448f1b73
font_01_sfnt_off000074af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AF 9996 bytes
SHA-256: a8f88e5237ec7aebd9907f070f3baebe5fe810a26558707d0807f8e6b9cea252

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