Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d5052c812bfcf0…

MALICIOUS

PDF

43.6 KB Created: 2020-10-16 11:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c31cea34dc640d3bdc2b894ab19a2844 SHA-1: 64357f688820350ba83ff95095f6510af9b7f6c5 SHA-256: 30d5052c812bfcf0aad99bae00e52a03ffbd65b85526fc106606f7be7fc487da
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/123?keyword=redken+color+chart+pdf In PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/4328668.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/1126145.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/4377800.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/8163316.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/1/0496/6013/3529/files/the_blue_fairy_book_table_of_contents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/82118803223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4512/6812/files/5_6_to_the_5th_power.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/iit_jam_physics_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9155/6504/files/jipokipemijakodosabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a97c96-fb01-4fd5-8d75-eb3b2a7b7027/18461984521.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b154c155-3b29-4fa9-9e15-048bce9b3441/23867244574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4674b249-fddc-4016-b0d5-3394602db987/dafesamebuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06806366-31ea-4ecc-a45a-7d967fef1269/tixax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69dc3417-2c2f-4bc4-85e0-2405af68d656/31458604331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1ed245-0c72-4030-9eea-6c49692393f6/wajijajivijamamabedujudop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3c1b7c-b94c-40ff-970b-9a0d6b395836/93327574882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b2eaf85-ea1f-4208-8187-049f9536fed3/wabokezawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2b8909-911f-4bd6-a976-0ea21f7ebe0a/mijobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/072c538c-5fc3-4ed3-a2e4-0d801b9b5c6e/fubipovudewepaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29442a40-6e7b-4c78-bdb4-74a9a5c1058c/19030055795.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_off00006d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4E 5136 bytes
SHA-256: bcbbadcce2e9fa434a293af09d5951ee1abea8cceb0877fbe04722d56e7dec41
font_01_sfnt_off00007ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBB 10120 bytes
SHA-256: b316512adf0753c0473f2a2b18d7c002875916a531967e0079e584404606e1fc

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