Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ea3e4543148841…

MALICIOUS

PDF

43.0 KB Created: 2020-11-02 14:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 28525b3d55ee6432baeb0e9fd9d97c32 SHA-1: 95beacfb8572fe0e1a0b3dd480d125885cb40878 SHA-256: f6ea3e45431488413c0eb0fd995b156e720e719084f0f2725d9e52b457556d72
142 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=grand+theft+auto+v+apk+mod In PDF document text
    • https://kenolafopufa.weebly.com/uploads/1/3/4/5/134528829/717d55a6e2dbad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5f8836bae0dfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f877c76e3ac2.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/b213db4c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392860/normal_5f9236f0dd61e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377371/normal_5f8a4b9a2f98c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9599/3754/files/72908568872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/280ffa06-cf0d-48e1-90ad-63028b50d6c2/79138056068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/46375028361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa2b279a-5076-484a-8d35-7b129583cc71/christina_milian_dip_it_low.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/tipos_de_lubricacion_industrial.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C27 5060 bytes
SHA-256: 7d9e083b32718e7bbe2fcf438f1c8518a3e3d5f7b955ccab230294f2652cfbad
font_01_sfnt_off00006d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D36 10636 bytes
SHA-256: e88857096de619a3bd081e977b0857cf43c574f4f84a03aaad47106be18a2ae8
font_02_sfnt_off00009175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9175 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f