Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f075004df5c7f7…

MALICIOUS

PDF

77.3 KB Created: 2021-06-10 22:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24d28028fb9e7a46be5a97ae04317888 SHA-1: 1a64f8ea2f4c332079a46d1a060301668ded21d8 SHA-256: 48f075004df5c7f7c2914497cab25a9763ac0d6f33576ed9cf7c005668118266
156 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as a phishing trojan. It contains numerous external links, many pointing to compromised WordPress upload directories, suggesting a link farm designed for malware distribution or phishing. The document body, though heavily obfuscated, contains text related to 'Animals list for kids', indicating a lure to disguise the malicious intent. No scripts were extracted, but the presence of multiple compromised URLs strongly suggests a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://garglob.ru/uplcv?utm_term=animals+list+for+kids
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160a160cac59ff---jezulo.pdf
    • https://kawanmto.net/contents//files/81697183183.pdf
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/c718c12a3771864efa396cf7025783f4/92671963462.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070dc77b9b21---89435156106.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/94d012bbdbf4dbb5444c2ec21a3491de/dojavokise.pdf
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/c2e5349f59f436ecdc70028898dcb707/kixejurigujerafubo.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/cf935d737cd2a952430aa5957f3656d5/19570684750.pdf
    • https://cowichanmusicfestival.com/userfiles/file/13029940330.pdf
    • http://tamlaproject.com/userData/board/file/93884712470.pdf
    • http://puppies-4u.com/clients/e/e7/e7f09595da74c05d2059c741134300d2/File/fuxexusopajukadarotaverik.pdf
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/4a8c13a0c0a3d25132b65e51fc6e2fc2/wifemuriwadepibapemeno.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a741578649---42077979644.pdf
    • http://adance0112.com/upfile/editor/file/wototakakopigu.pdf
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/jakmvjbk5uluvp7j67thjcvce7/10272309464.pdf
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091f2de8a38a---natosogotirumiba.pdf
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883f9f6ae34---99778934473.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082c95181068---59800434661.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f35e.bin
9e301aa1aa6e3f922b67110b3dab7b24f4bc18c60531884f1e29d2feab755b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF35E 5108 bytes
font_01_sfnt_off000104a2.bin
fad6904f71587a07920aa392f1585c2f0a02f987ff6ba907e2ef551b629bce2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A2 10484 bytes

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