Malicious PDF — malware analysis report

Static analysis result for SHA-256 515609610b8a669c…

MALICIOUS

PDF

43.8 KB Created: 2020-10-08 00:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a27b2b34848716487d9dff7eca6a5ea0 SHA-1: e9175f5d2b099dd1e10635c5213d46eb68db8b5b SHA-256: 515609610b8a669c1939c97b873c4bf9aab07c64480657b0e8cf5254c47f3fd7
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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://cctraff.ru/strik?keyword=aws+ec2+interview+questions In PDF document text
    • http://files.michellewilliamsgamaker.com/uploads/1/3/2/3/132303354/8ef01b7c177cb0.pdfIn PDF document text
    • http://files.palabradivida.com/uploads/1/3/1/3/131382030/04a6a5bee7.pdfIn PDF document text
    • http://files.simonedehaas.com/uploads/1/3/0/8/130813325/boxuzeledogegeperad.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/1/0435/2344/0804/files/blood_cell_diagrams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8203/9964/files/10128025504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1484/8671/files/abcnews_foster_kids_prescribed_psycotropic_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4202/9215/files/barew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5740/0994/files/27480252207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a950137-aa76-4842-921d-b5b4a539e141/lirudorexagexaruwani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cf9bbcf-fe04-4b3b-8ec2-fdf6b1d0fabb/nosaxasekuxurejex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c53ba1a2-cd3c-40bc-93da-c6cdfc5677bf/27582189218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22da2f1a-ad5f-481a-92ff-738a7831f976/26926986478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc70885d-8c0f-4d61-992c-5a6149657a49/felesiwaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de51849-5877-496f-837e-056a2ec86b7e/92237403020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3464b5e-87a6-4c82-b534-75da1bb78617/rogivado.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6B 4948 bytes
SHA-256: d26663944717271b30b802480fe69c8fbdc128a243a5e3808ba5191e5c4eccce
font_01_sfnt_off00008079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8079 10128 bytes
SHA-256: 6b6b377cbeec4f5e6e9d6a4e34177185da892f7a7e56f94a4421417713b29455

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