Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7dab317de525112…

MALICIOUS

PDF

41.6 KB Created: 2020-10-23 21:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: ada5df0982602dc1a3b9f6392a50c355 SHA-1: 12b0aee0e86fffb728bfb4c017b8d32731fa2de1 SHA-256: d7dab317de5251122043678987d770718361deed01492835293d2bb714588b38
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://ttraff.club/aws?keyword=type+two+diabetes+mellitus+pdf In PDF document text
    • https://fuvipizewovotat.weebly.com/uploads/1/3/1/0/131069886/ec6c44.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/jenupexi.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/sekiperomapob-zisefazuma.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xurixado/pixetomezerutuvuga.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/ableton_push_2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/77719650166.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/cicely_berry_the_actor_and_the_text.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/kufojukuge.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/tactics_for_listening_audio_script.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/mapa_florencia_italia.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/arrange_pages_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/20084615406.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/el_autoestima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99ece7e8-8948-4b40-85cf-534322f5fcb8/65918023087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba6d377-52d5-4fb5-b3b3-7b3d951a5ea0/wetexovibupotovamujuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/276639c2-cd3f-42eb-aac3-6e9c040f8dcd/nsca_study_guide_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/netflix_premium_apk_mod_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3210/7937/files/36649049958.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_off00006477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 5376 bytes
SHA-256: e122d96febb8199fcf80b5603cf82d5136499c634a519297dbf5f1d47805b098
font_01_sfnt_off000076c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 10184 bytes
SHA-256: d068b69fb5c76f206e163285b41c37402f413917e26963cef2cd3d758a4f6133

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