Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a964ed6a7cc264…

MALICIOUS

PDF

34.7 KB Created: 2020-10-14 01:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9e621e7366119c8f98d4026f36cc12f3 SHA-1: ee49d3a01268a216cb00983ad167ba2f99379e13 SHA-256: 96a964ed6a7cc2646f492a5d1ab9fcd26204b3a729427b0ff451e21a5fa8b73c
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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/strik?keyword=cara+mengubah+subtitle+indonesia+di+youtube+android In PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/noxas.pdfIn PDF document text
    • https://site-1039950.mozfiles.com/files/1039950/2792092093.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/1/0481/2731/2035/files/daft_punk_random_access_memories_download_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9102/0961/files/the_forsworn_conspiracy_find_evidence_about_margaret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4105/4105/files/gewakigeravepofuruwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0282/8712/files/minimum_wage_illinois_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3041/3977/files/the_crow_eaters_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9538/7048/files/vuvinosujotafuzusinutisa.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_off00004a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A62 5384 bytes
SHA-256: 58ef0b687ce00c6104356f813fdcf51e42dbb9e6092491a805392c07c9ced580
font_01_sfnt_off00005c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7D 9852 bytes
SHA-256: 964ddf3ded527cfd6c2391d56c8fa0c4c1a9ddba203a1622b91e9ced7343a22d