Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf5f423843665a08…

MALICIOUS

PDF

80.2 KB Created: 2021-03-15 12:49:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 56ae0cdc3a32e10a62b0b9720548a578 SHA-1: dc4eec82096535e1d63ceffe27dbfdeea7dff4c0 SHA-256: cf5f423843665a08f905cf59cccbc8a736859bd304ad2c71b96dbdc27e938ed2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous embedded URLs, with a primary focus on redirecting users to 'golowaki.ru' under the guise of search results. The PDF's structure and the presence of many external links suggest it functions as a link farm designed to lead users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/wix?keyword=phantom+tollbooth+chapter+3+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/xajamenujo/jsghBvU/54696124756.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/list_of_danielle_steels_latest_booksofvmf.pdfIn PDF document text
    • https://cdn.sqhk.co/vatomepipiw/fkmIOBU/kudimonarofofuluxasaguw.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/gebanefuku.pdfIn PDF document text
    • http://f13x.xyz/timurokawmig6f.pdfIn PDF document text
    • http://dom-bita.org/watuwenobofevimiranotn5gop.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/X9XheD2/jatuzizugob.pdfIn PDF document text
    • http://laserisesiseno.getenjoyment.net/50041751100.pdfIn PDF document text
    • http://silvanozito.online/80192359245o4ujl.pdfIn PDF document text
    • http://zitugaxusi.mygamesonline.org/65205692126.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/ghPepif/christian_movies_2020_free_download.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/how_much_does_industrial_pipe_cost.pdfIn PDF document text
    • http://magonawaneku.22web.org/lyrics_ub40_-_i_cant_help_falling_in_love_with_you_official_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ribitotuv.epizy.com/2019_tamil_horror_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a8b958-98a1-4825-98c3-2c31edd098b1/baledozobegesosunujera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b9fb72e-6845-4d5a-9a36-dfaed0541791/tobivegal.pdfIn PDF document text
    • http://vidoniwofunevan.onlinewebshop.net/sample_business_plan_for_a_startup_company.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b88fb397-4ded-4025-82a1-13629e894006/inkscape_download_windows.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6441fe-211e-42f1-99c0-a98dfa6c5eab/fazij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eeac20a-d0ca-4322-b18a-1b449f02b79a/tuvepufodudatekipebar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bcc3a6c-f3ac-4d48-b02d-97c07299d1ae/majidulogavesiluzu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74e8da3f-7899-48dd-a57d-ef816ec20c43/buvogudikome.pdfIn PDF document text
    • http://sanemogoxidiwus.epizy.com/93875824431.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_off0000fb54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB54 5836 bytes
SHA-256: eb1e54de3d157d24bc66030ec507f223a12e7b1d7ec659b69c7edd39db004480
font_01_sfnt_off00010f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0A 10772 bytes
SHA-256: d3ec23cf1a5d1e561517b3edc33983d2e5a408fdcc4cfbfce7a91780389759ce

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