Malicious PDF — malware analysis report

Static analysis result for SHA-256 7520d474d4f499c0…

MALICIOUS

PDF

64.6 KB Created: 2020-10-05 17:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dc11c792c3d2dd6054d59d92648ecd3d SHA-1: 62c48654a77fa977d38a09610146ed3b33cf20ba SHA-256: 7520d474d4f499c02849d0221d7dfab9212cfe2880651c79a1d29a11c2452fa6
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=wrigley+seating+guide In PDF document text
    • https://site-1036995.mozfiles.com/files/1036995/fanunojazavegefirun.pdfIn PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/dojok.pdfIn PDF document text
    • https://site-1043653.mozfiles.com/files/1043653/26338442664.pdfIn PDF document text
    • https://site-1038455.mozfiles.com/files/1038455/lidozewodimafotajipib.pdfIn PDF document text
    • https://site-1043837.mozfiles.com/files/1043837/jojifixus.pdfIn PDF document text
    • http://files.treesurgeonmayo.com/uploads/1/3/2/6/132682758/75b071653aedd4c.pdfIn PDF document text
    • http://nuvufege.yawenyang.com/uploads/1/3/2/6/132683289/xilelovuferu.pdfIn PDF document text
    • http://files.juliahendrickson.com/uploads/1/3/2/8/132814898/jadugokumo.pdfIn PDF document text
    • http://xabeb.girlbeyou.com/uploads/1/3/2/7/132712615/a6d63.pdfIn PDF document text
    • http://files.balnarringvillagecommon.org/uploads/1/3/1/4/131407045/7de34f3e2d0b9.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/1/0486/1178/6912/files/how_to_dress_classy_men.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/queens_pawn_opening_amazon_attack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/sap_crm_video_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/tfx_power_supply.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8141/2007/files/dog_face_monologue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2852/8808/files/nafazuzozi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C28 4880 bytes
SHA-256: 8c107fc8153485db7c5cf327e1e8dbbef475c120700d80e7848f71b1b1e32779
font_01_sfnt_off0000acd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACD1 10796 bytes
SHA-256: 023fd1b795148c5ec77a4c63b9eca18d35c0f306a3e52bfa3b57ea07a79bdde1
font_02_sfnt_off0000d1d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D3 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073
font_03_sfnt_off0000e69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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