Malicious PDF — malware analysis report

Static analysis result for SHA-256 3260e97a4a96ea73…

MALICIOUS

PDF

38.6 KB Created: 2020-10-06 17:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4b74bb048db61e4eee9cba6778945e6c SHA-1: 687a323209c1cbfa9f548fa8193b86a70bb69286 SHA-256: 3260e97a4a96ea7372255ea3b9eccaead42361f01c599f1f117b444aa0833488
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://ggtraff.ru/strik?keyword=lego+bionicle+mask+of+ultimate+power In PDF document text
    • http://files.simply-creations.com/uploads/1/3/2/3/132302871/6929711.pdfIn PDF document text
    • http://sevezalu.thereptilebarn.com/uploads/1/3/1/1/131163667/misojaliju.pdfIn PDF document text
    • http://files.bamboolearners.com/uploads/1/3/1/6/131606256/b9d05f0b185252.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/62955219090.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/tuxifigorizevovumidegodel.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/1/0481/2937/6407/files/blank_hiragana_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0376/7713/files/calico_critters_mansion_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/larry_h_miller_chevy_dealership.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/ravuxijegokeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7474/0636/files/libafemexavufital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1444/1125/files/silelomotagivuvawakimijix.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000582b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x582B 5572 bytes
SHA-256: 404b358dad27df76adb3aba4f2afd25464b1e35f11cb301a83656b741bd4a0f0
font_01_sfnt_off00006b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B27 10156 bytes
SHA-256: 31f0a4b04ac840340a2cc73d61790e083f6c60a71c17624a231aff51a6f1f8eb