Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0d1030a1ab032a…

MALICIOUS

PDF

168.0 KB Created: 2021-06-25 18:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 56e6689788c0a50edfcd976ec021df4d SHA-1: c622ecfb7d30674908faeb0e81e9db02b3e5f91e SHA-256: 6e0d1030a1ab032a8e5d3477786f01b541cef92e5ba9478c495d2a85bf4f3bab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many hosted on compromised WordPress sites, designed to trick users into downloading a malicious file. The presence of a link farm with UTM parameters suggests a phishing or scam campaign. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it is designed to deliver a malicious payload, likely through a link farm masquerading as a download for popular content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9561

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://infrive.ru/uplcv?utm_term=download+weathering+with+you+eng+dub PDF link annotation
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cef72675984---xelapiguvalimid.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10791b45f8---4173238846.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/nelevivok.pdfIn PDF document text
    • https://wodepcb.cn/uploadfiles/files/61218949377.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/2eg3p67ffa834et2qlg8rhk52d/pivixuxomibafubotubit.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/51827008563.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/b70e4f5ed1cd672a14ace02347277446/jolubujewufagetaved.pdfIn PDF document text
    • https://hyundainhapkhau.vn/upload/files/punivojufanu.pdfIn PDF document text
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/9ecf8431143aaf06f89102d3d1028827/sirasifirisuze.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/3njpe5m8lptcsnagtolhctrj5q/sunudaroluto.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac480450064---rulosimerilebopiwu.pdfIn PDF document text
    • http://arlingtonhigh1961.com/clients/e/ef/ef36f0800c0a5d5a0b00d5ecc8c3c6da/File/nokab.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/201deab074cb8e6d7624cac2509398d1/68841253035.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/cb374bdf17e9c266482a4fa87f01412f/56509080540.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/77481643881.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/v1mpnte87ultdqhehn5kan25v6/muwax.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a4cb46355cb---sufojuradim.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/8871dd250a293dbea6e10b8f15b8c978/sesijopukurebazekuvibiw.pdfIn PDF document text
    • http://magicdiscoradio.hu/userfiles/file/61671885583.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608435251d452---nogexovelukajurigowebo.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb3ab90b9c---76315980739.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16085d656e1005---11647023449.pdfIn PDF document text
    • http://accu-chek-event.com/ckupload/files/roxikafabakidagezer.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://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_off0001877b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1877B 23520 bytes
SHA-256: 74a93a1d201d16bd505bd7d266099a35d311eb143e8f9898877df5ee956526aa
font_01_sfnt_off0001c25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C25C 17040 bytes
SHA-256: 07711535970a2c7dac13e11ba28f39cf3a705bfeb0fd7384704217426b36472b
font_02_sfnt_off0001db36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DB36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F344 48376 bytes
SHA-256: 014631fe2e581a9f3eb6773a7655203a98a884b7512b392ae4b5ec6b35ff57e0
font_04_sfnt_off00027892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27892 10800 bytes
SHA-256: bcd702a6781ca7bfc3ea1de23268ae8c14c3a938e786bb642027d37287611664

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