Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe5ce0563991ed8…

MALICIOUS

PDF

78.1 KB Created: 2021-03-08 22:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: ad23dc4ac94e10da409b9067ecf85d14 SHA-1: 9822baabef24d86e8f450d5e0949c25452f3a8c7 SHA-256: 7fe5ce0563991ed81760163e97962acf985d09169884564897faa99c03802ad1
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URL heuristic further supports the finding that the document is designed to redirect users to external sites, likely for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://maypoin.ru/award?keyword=data+mining+statistical+analysis+using+sql+pdf PDF link annotation
    • https://cdn.sqhk.co/sofizagumup/jHja0Ai/screen_recorder_windows_10_free_download_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/cGqhjoI/66840153803.pdfIn PDF document text
    • https://gipulafu.weebly.com/uploads/1/3/4/4/134442702/7484042.pdfIn PDF document text
    • https://nevofegef.weebly.com/uploads/1/3/4/8/134851200/de6ba65c6e.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/gehiunw/43211347292.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/jdNRWXI/chess_pieces_configuration.pdfIn PDF document text
    • https://cdn.sqhk.co/fipexuwebo/pFhgjij/jifovugoporigepirugisemep.pdfIn PDF document text
    • http://takovod.66ghz.com/91063463999.pdfIn PDF document text
    • https://molikosa.weebly.com/uploads/1/3/4/0/134017769/madiv-nonubegeral-potelupo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_38d297f331ac4ec48401bf33515e9d11.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/e18-_d80nk_infrared_proximity_sensor_datasheet.pdfIn PDF document text
    • http://mokupemoraworal.epizy.com/12344782857.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/best_italian_pizza_dough_recipe_bread_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/pokarodekopepuzek.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/baaghi_full_movie_mp4_hd.pdfIn PDF document text
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_3ff4c9dba54d4dbfb464cab65533447c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tulosa/xuxufekamex.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/pisibigarokiwok.pdfIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_42351e5f40bf4a1c88ef5a94d84241a1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dukajevo/94546522066.pdfIn PDF document text
    • http://suzekusopowe.epizy.com/free_powerpoint_templates_business_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/best_self_tanner_for_beginners_2019.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_off0000f3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BD 5604 bytes
SHA-256: ecf9147d82fa032f83d6c3fc8d4229628ef2f2400cb1926c4e9fe5c4bd9c9e06
font_01_sfnt_off000106d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D8 10460 bytes
SHA-256: 0765767f28346675ce9e460544188fa52cc1442a3edd682c6faeb3938174c0ba

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