Malicious PDF — malware analysis report

Static analysis result for SHA-256 7894dae7471e3f5b…

MALICIOUS

PDF

45.0 KB Created: 2020-11-08 04:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 923f14e94eca3ca272e688dc3c47d50f SHA-1: 67f93e34fe710943192c3efe384adf2e57cfd8b1 SHA-256: 7894dae7471e3f5bc9a46a7b6f58ce823dc5a54b8c0617f3ff845d13cf52a343
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=braum+guide+league In PDF document text
    • https://dizuzoboxok.weebly.com/uploads/1/3/4/3/134351397/1611337.pdfIn PDF document text
    • https://kalodobig.weebly.com/uploads/1/3/4/4/134432105/bevesusapuregozix.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/225beece-4485-479c-a342-496c92159805/5872455794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0033b676-81d7-4e0e-bd33-9865cd47de6e/71993377293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdc324d2-12cb-492b-9a32-88191cad071d/wedomukobinuwadogakaruzek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a8a7d4c-6bfc-4254-bf0a-2b449a98a0ac/kudusid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3209a7-137f-42e4-8c18-cd8059497ad8/ranod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76e7fe2e-3187-465b-a065-71346810a5ef/17735023157.pdfIn PDF document text
    • https://vawefubumim.files.wordpress.com/2020/11/82794357459.pdfIn PDF document text
    • https://fegamal.files.wordpress.com/2020/11/kizinibuwebax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fab2efe-888f-4e83-ba65-ba7602b6d70d/the_craving_mind.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_off000062a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A4 3120 bytes
SHA-256: 16a0685b1af8f7ff3286410c82d065b2ef9dd16f5cc5e004aadb0dd239daad33
font_01_sfnt_off00006dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD7 5016 bytes
SHA-256: 687a0c9c853c4e7718ffd17673fd51bb9fdec648e7e969ff0e049beae8f87cba
font_02_sfnt_off00007ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECB 11980 bytes
SHA-256: a8ce2310cb0307af285b194f67cf620eaac6bc14050b51a3a8022fc0a87f4c49

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