Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29e7066b0e9c375…

MALICIOUS

PDF

44.7 KB Created: 2020-10-01 20:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2d078e87aa5b792eeb7cae1af146e499 SHA-1: 3cf4a98af2eeccc06f201e59e476dae0f60d44b8 SHA-256: e29e7066b0e9c3751eb45196ad6dd0abc0fee82cd344e3310791b80d2a819dfa
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://cctraff.ru/strik?keyword=segmentation+targeting+and+positioning+pdf In PDF document text
    • http://files.mr-abraham.com/uploads/1/3/1/1/131163533/6b545ceebcfc6.pdfIn PDF document text
    • http://vivotepaf.pollymeyrick.com/uploads/1/3/0/8/130873997/tivuwifa.pdfIn PDF document text
    • http://files.biofeedbackada.com/uploads/1/3/1/3/131379875/maremawimexapa_posowavewewim_napibomef.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/jaserimogekajudomeneluno.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/f7778f78-472e-403f-887a-e1a5919b4404/mabavesufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b025a187-6949-4948-8bc1-1ef473017410/rabobokirobuxozig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04f10632-5a88-4872-8908-29d08c2d988d/47256874675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6db7e4c-14e1-4507-b6b5-7367a15d9946/momokexixetuxoranegozik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0467/3697/files/32566341928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2500/5206/files/23250988134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9072/3487/files/amazon_prime_video_android_tv_working_apk.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_off00007024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 5432 bytes
SHA-256: 04aec4c2d3b7ab30b944db054240f97b99ac9a92bf6af63ba394f0f151713a4d
font_01_sfnt_off00008283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8283 10376 bytes
SHA-256: 3ab5bb94ef9cc836f3289bbc823a8cb6316adc23957768a5b2b024fdf510e276