Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ab146930d47829…

MALICIOUS

PDF

86.2 KB Created: 2021-03-21 09:38:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a1ebe74d115aebd7951ab882e26ca3bf SHA-1: 365d1667cc42c23c8125502f10d98cb85e585dc5 SHA-256: 59ab146930d478299362b002693a67fe10ca98d35ea7b10b3a637057449f4044
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://nipisod.ru/wix?keyword=audi+license+plate+frame+black PDF link annotation
    • https://ziresaro.weebly.com/uploads/1/3/4/5/134509830/zitufodibexilitosuz.pdfIn PDF document text
    • http://rofuxipof.mywebcommunity.org/paper_cutting_book_contemporary_artists_timeless_craft.pdfIn PDF document text
    • https://gemuvubakada.weebly.com/uploads/1/3/4/4/134494784/gefadaturitekiz.pdfIn PDF document text
    • https://migawonakizize.weebly.com/uploads/1/3/1/6/131637147/5192125.pdfIn PDF document text
    • https://butusokusumowa.weebly.com/uploads/1/3/5/2/135294155/236843.pdfIn PDF document text
    • http://kunewalijaxuna.getenjoyment.net/application_for_job_in_urdu.pdfIn PDF document text
    • https://jumufewaxijakuk.weebly.com/uploads/1/3/1/3/131380308/13053.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/rirukikuwimememirop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c04de9b-dd00-4471-b04c-704ca4bf20c8/lukatonefaziw.pdfIn PDF document text
    • http://jifimurosesapu.atwebpages.com/free_android_app_to_convert_to_word.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/35076721594.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/numipalumokapek.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/wenomutifafit.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/free_metronome_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/012988a7-1df5-40cf-a99c-edff6ffd21ba/43756657825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e3cbbbb-f784-4505-9113-d4fbfdeee87b/child_of_god_tattoo_sleeve.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/qa_analyst_manual_testing_jobs_in_toronto.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/75518792870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14f5e0f2-f8c6-4a61-a16c-04faaef20bf7/76144498570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83af9e47-8fa0-4fea-b01a-b02cc1e84dc0/xekorawavesilewugok.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/texaluvubesajizifewejobat.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/87480419764.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/kopuziv.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_off00011396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11396 5492 bytes
SHA-256: 1f954514779c27ba8ae9f8b94f84f3b682321c2bcc090abb328f5fbeaecd5218
font_01_sfnt_off0001262d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1262D 10844 bytes
SHA-256: 746a849183414250108fa5237e7326402642d87b9693b2d0f22e3b87b7ca602e

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