Malicious PDF — malware analysis report

Static analysis result for SHA-256 67194e936455d48d…

MALICIOUS

PDF

57.7 KB Created: 2020-10-07 05:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d9df2ff56c1df1d0cd59971356fa730d SHA-1: 7c8be4be2e82ba403bb667070490219812fca413 SHA-256: 67194e936455d48d8f46c41a05a0ed3c55de7fc07442e80bababb69caf00c83e
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=kimyasal+t%25C3%25BCrler+aras%25C4%25B1+etkile%25C5%259Fimler+pdf In PDF document text
    • http://demog.portcitygymnastics.net/uploads/1/3/1/8/131859042/xutujopipivapigixa.pdfIn PDF document text
    • http://zunon.newcanaanpizzaandtaqueria.com/uploads/1/3/1/3/131380771/xisusuwepetin-xososejawutelog-lekutovanimajin-bumivewo.pdfIn PDF document text
    • http://files.naturetherapyonline.com/uploads/1/3/2/8/132814342/vuwugoduvikekadujuna.pdfIn PDF document text
    • http://files.hackneykeepournhspublic.org/uploads/1/3/1/3/131378868/jesenixuwejinazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3499/9446/files/pro_keto_rx_uk_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0321/7573/files/zipavijezopila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8734/6846/files/54667600457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8477/0199/files/39790073333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d97a0a2d-fc4f-4270-ba28-eb0fb057d13c/vikugidivavobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7395dc7-4f82-4ff8-a16f-5d3757d93bb6/sozininoziraboxakopakulub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/charlotte_mecklenburg_school_calendar_2015_to_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/mexume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/weeds_in_nebraska.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 5292 bytes
SHA-256: 2a6542cc20adfb0639128dc4fba5dafe317e29548639b1670e8e6e0c271f2346
font_01_sfnt_off00008387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8387 2252 bytes
SHA-256: ee967336568f77ff61a5ae04097864f25fb24cf77b94457ab20e22408cc95c1c
font_02_sfnt_off00008cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 12760 bytes
SHA-256: 427d693648bd3a3f56a4946816c9586f6c8edb949bd837ab8c8d424ad0802f42
font_03_sfnt_off0000b2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F5 16344 bytes
SHA-256: 9c47a8ecf7103172530608de19fa11afb8a035ab51042e9cb8c6809f09ebb189
font_04_sfnt_off0000c86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC86E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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