Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c5cc101e69d1d7…

MALICIOUS

PDF

42.3 KB Created: 2020-11-06 13:31:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 891af84630fd7462f38f94b7f84f8b9e SHA-1: 280d7731e884ae94461888ddaba85e748a0ceed9 SHA-256: f3c5cc101e69d1d74642f0f57cc2b245be31e612a0b05cabf20952a9f37e9128
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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=liqui+moly+hydraulic+lifter+additive+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410030/normal_5f94e6b8f420b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_5f9be8feb456a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462339/normal_5fa1f3ba06409.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_5f9c70eba139e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_5f9d1e35a94cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f94755368b9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_5f90484320d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f93ccdbbb096.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418013/normal_5fa3444e4b3c7.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/27278ab2-210c-46ef-babc-4a2701d8e677/pixazubaposoxamawoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9629723a-6837-43dd-9baf-9c536ea45850/bineruwotijogijoxevuz.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/ap_chemistry_ideal_gas_law_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65bb027e-7378-49f0-9c30-58bab253e54e/39464738862.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_off000046fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46FB 5492 bytes
SHA-256: 5bbc5f13096fa5af6400f74b00a732d899de45e7238c2bf9b4c391965df8dee5
font_01_sfnt_off0000598b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x598B 10860 bytes
SHA-256: 4e41ddcd026239cf3c3da2974327fb13bfa68f2dc71077c8ca50a5f55525f980
font_02_sfnt_off00007ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE8 17808 bytes
SHA-256: 58101d5fa7ef0231291df8a3dc5b5e6339b961b448d352115abdbdd3afb4bd0a