Malicious PDF — malware analysis report

Static analysis result for SHA-256 402332002179a1f5…

MALICIOUS

PDF

44.1 KB Created: 2020-10-23 20:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c0f58732312a645b00f828bd45a42dbd SHA-1: 2d62a93b090bc390bb2fc4b92facb6354e591a82 SHA-256: 402332002179a1f51c3d9eebce75c201ddd52a03d62211139847b45fe9f7b3d0
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.club/pify?keyword=lords+of+the+fallen+leveling+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f8b92918c853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f88a4368f48e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5f90652f2e32f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87315eb461b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379231/normal_5f926fbde8f5d.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/42038aa0-4d67-464a-adc7-7cbf6150d28b/xedanobajevuwosivaxejil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46f2997-fdad-408c-82f0-b2a16f5b4342/63124709197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dbf898b-1398-4302-9bb0-3b3d4409a6b8/xiwujabarowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f62802e1-0e90-41f0-b041-021811f55d81/kotor_2_crafting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/87909106711.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/atharva_veda_in_english_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9d54b66-eacf-4400-a85f-423db4244a59/nagatetakogeserazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff5d15f3-c56f-4e61-971f-8686b1f94fd3/10710511453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5010faeb-d683-4905-b8f3-8ad319f561b7/vurevolasenoloferidovaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0020/3936/files/zirojatovasuduwezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9192/2596/files/golf_break_80.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8390/0080/files/nabikawemonojajiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3833/8972/files/marantz_sr8012_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8693/2894/files/28250210172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3281/1957/files/fixed_assets_and_intangible_assets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2862/7623/files/89467203283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/nunusekuxawovinukumulugi.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_off00006af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF3 5168 bytes
SHA-256: c5d7dfb695a1664e3e544c84ab6786a339887748ac99080b364112faca6d18e4
font_01_sfnt_off00007c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C92 11392 bytes
SHA-256: 193262e929bde4457519705cf85a6a5f3b0fa184a66a9320486a5a1bb0d37df5