Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7369ca38fcfa8d…

MALICIOUS

PDF

51.8 KB Created: 2020-11-08 04:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cf4b9ff7ac3e253c562ea4931e3da57c SHA-1: 8e51059128898a533a7dfe77bb54785483f3c94e SHA-256: 6e7369ca38fcfa8dbfdbd03d7c6e277aa35164772ec69c5b0191bcdc108b3718
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=watch+game+of+thrones+online+putlockers PDF link annotation
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/5b9cdcd9c38d221.pdfIn PDF document text
    • https://wotafoxig.weebly.com/uploads/1/3/4/3/134306194/ef7a57e2884.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/297455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_5fa34fc954642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408479/normal_5f9c17f67a155.pdfIn PDF document text
    • https://munazuzane.weebly.com/uploads/1/3/4/3/134350045/a306d4e78ce28a2.pdfIn PDF document text
    • https://wimixexaselu.weebly.com/uploads/1/3/4/3/134324609/3587759.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/xozoveborasidumuraxuza.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/caracteristicas_de_la_celula_bacteriana.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/tuwogipegemike.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/nakikemetunodukadase.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/dnevniki_vampira_smotret_online_fanserials.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/3237622305.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/dudamex.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/grim_dawn_leveling_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000743a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743A 5504 bytes
SHA-256: 62ee8bcdaa6a3ce669d5958adf0ac1027bfd23f19a2b5357e79d2cd2ccc2e3a0
font_01_sfnt_off000086dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DD 10972 bytes
SHA-256: ee223db22f50e0cfff1dc717bdd6c339313659a3fe3b71453549b5451ef39025
font_02_sfnt_off0000ac9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC9F 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8