Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbcc0ca90565dabe…

MALICIOUS

PDF

46.2 KB Created: 2020-10-10 08:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ec46451f6f7e1d64cb15f2499ac70add SHA-1: 136527e4a9cbbbc4cffb17d26e2d6bf7c70bea15 SHA-256: fbcc0ca90565dabeeeb4dde03ce5dfb798d5689a11a06b494928ce1dfd1eb7d2
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://gettraff.ru/strik?keyword=metal+man+weakness In PDF document text
    • http://files.hu-tech.co.uk/uploads/1/3/1/4/131453945/8fabd3a2e544b.pdfIn PDF document text
    • http://files.bensirestaurants.com/uploads/1/3/0/8/130874600/miwetiwe_febovanozegij_veluxozemerapo.pdfIn PDF document text
    • http://files.holidaylightingstl.com/uploads/1/3/1/6/131636988/gifuvesanajudepu.pdfIn PDF document text
    • http://lumowa.centralcoastna.org/uploads/1/3/1/4/131437421/502358.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/d4285982-c96d-40a8-aa36-b8d4b22c34a5/zopatez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b63f0c-b877-41e4-97d8-12ee49b459c4/1116749496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b44ffdd8-b9cf-410a-9029-5244fd307754/90113935400.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440bcb86-82c7-4bb2-bb9e-0a937d79ec74/belufibelimazonisikef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943eb1e0-e653-4fc3-8296-6862aef895b7/98337282982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c51e92-cc04-47ff-ba36-f58e6bb8f531/99886264170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6705995e-7436-4cd4-8c51-2e3562c88638/19848089485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f89263aa-b93e-40df-bd37-beca7c5f958c/9266312285.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47bd842b-d596-4e11-b5cc-22fdad110251/bokemebap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f86af414-8037-44cc-af47-618206783efa/8831016115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/difudapepabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8553/6920/files/direct_square_variation_worksheet_with_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2117/6479/files/illinois_state_sales_tax_rate_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8232/7221/files/how_to_write_chinese_name_in_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/concentration_commentary_examples.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_off00007780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7780 4896 bytes
SHA-256: d3ba3a9b4f4271f10ded7c740388a9b5d79c89f3cfef1434086ddad040c3966a
font_01_sfnt_off0000883b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883B 10464 bytes
SHA-256: 464af653003d555315e744d29005660d1616eba16a4805783be72018f7d69e17

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