Malicious PDF — malware analysis report

Static analysis result for SHA-256 33725849e0e4327d…

MALICIOUS

PDF

43.4 KB Created: 2020-10-20 02:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ed220562b2d954d1d960d3d2b75aedd6 SHA-1: 5c0bcf3e12b09ae86975f59421862b692a1aa5c2 SHA-256: 33725849e0e4327d7c0492ec1358afc974386b10926b9106a7220b7dc8f18c32
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/123?keyword=koh+samui+tourist+map+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5f8b992f8e8bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374532/normal_5f8c746888c48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369309/normal_5f88f62c12e85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f8a52aa1a91e.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/1/0476/7481/8726/files/kakobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8785/3720/files/club_penguin_secret_agent_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/pmp_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0800/7072/files/area_code_705_us.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/vadusijan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/899dfe0b-c53d-471b-ad8b-9b0f6f3ae66a/bivazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7aa525b-af98-4c07-b9ac-2cb4d59a6f51/podelejiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/679d7383-5a76-4fc2-b71d-1f9ed880df17/zasorigegumobeduje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8652/1522/files/poxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/3531/9461/files/sling_psychrometer_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6310/7480/files/photo_editor_apk_free_download_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dadaac0-c582-4ef6-9471-62b169fb00fb/gokurerorijem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30456d24-f49a-4110-90a8-21942a259593/42227691742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd67d3a-4561-4cd9-92f1-0d4cf3adac61/rebugiduwevuxabijidukokur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1f25a8-bb33-4a81-9f5c-ef7673a91ae4/48356502403.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20ab5e8e-2526-4bc3-8233-ad90401f7efb/xaxikatupatejabigokexix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/manual_intuitext_clasa_3_limba_romana_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1546/1285/files/79382063753.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_off00006b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B83 5220 bytes
SHA-256: 67451cc6e4d01b432d962531d6113a789bba26e86c633b6e11c152fa07df46ac
font_01_sfnt_off00007d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D24 10208 bytes
SHA-256: f47cd00d9c259e107abbf57d1d3e963cc5ae57f94af0829168eedac18fb92587

Open this report in the interactive analyzer, or submit your own file for analysis.