Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01e8efb1127c449…

MALICIOUS

PDF

86.3 KB Created: 2021-08-23 16:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: bb56c3db98352db733befcceef5f4628 SHA-1: 214f95130ebaa4085d8234b7b660b31769a2091e SHA-256: b01e8efb1127c449a6edcbb5c8d3b9554ef7505a0cfa508e4cd74c0666d310ff
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or disposable hosting sites. The embedded URLs, such as http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d38646a7b5---xubawag.pdf, are likely intended to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://tecs4.com/intranet/ckfinder/userfiles/files/xupijil.pdf In PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/79968520516.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/nimivelanitixufalug.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/66694070250.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/37655857220.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d38646a7b5---xubawag.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/6pb346kqrfj4mj7ecc1evl2330/delusobevusasug.pdfIn PDF document text
    • http://brkvinc.com/userfiles/file/nidowa.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/opbiefrsdv1orgqgt4dlla6as6/97590782617.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/gazepenugamowobezase.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a509b92f0ef---wavewofenezaberosamon.pdfIn PDF document text
    • https://grandegroup.net/files/xiwuganenavepor.pdfIn PDF document text
    • http://mirai-kankyo.com/userfiles/files/64024992074.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9b3066f59---84402266229.pdfIn PDF document text
    • http://hchs1972.com/clients/2/2c/2cb73362227bcfbd3ed6ae01b5b3dc46/File/minunanumuvamugej.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608a14190c7a6---kadowipubosigenoji.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/80899478189.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16082e14d3f0bb---koxipuvejoruliwabogotato.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/5699926830.pdfIn PDF document text
    • http://yulintimber.cn/d/files/fowekixogoxazefime.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/d3572398a2d8da1f88b07316e9244e69/ninelaliderotifogugot.pdfIn PDF document text
    • http://nathulaldasptti.com/ckeditor/ckfinder/userfiles/files/bodifedinekugukab.pdfIn PDF document text
    • http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/46033639719.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/mojagoxixololawukexegem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=gen+z+word+for+coolPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001053f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053F 10132 bytes
SHA-256: 6a9155147cc26a1d54ce623215d0a32d6cb9677ed2fbcc070fec6692fc0970ac
font_02_sfnt_off00011c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C13 17748 bytes
SHA-256: 38092ebd15f70ac00c24c6d397829f34c63b132fa35e9dd1dc8a0f2e493e03ce

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