Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e1b29771a19b6e…

MALICIOUS

PDF

82.0 KB Created: 2021-07-04 08:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 776a16f3accc6e12f0816aea520d3360 SHA-1: 3879cb10e6247f120ad4503130caf1437243a89d SHA-256: 05e1b29771a19b6eca9b80758e79889000b585702a9a8b9467e82da5d085c8c1
176 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PRC/3D content and ML classification further indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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=pa+driver%27s+license+expired PDF link annotation
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160943074135c9---pozififefinale.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/unrdsb5em5tthgn1oph79ok108/gumulufokegap.pdfIn PDF document text
    • http://ranahytta.com/ckfinder/userfiles/files/kudepoxan.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/b00b1902412e08402fe4c86735d3f116/fupamavepalukudabisimi.pdfIn PDF document text
    • https://botorka.ro/userfiles/file/futuvobapujeniw.pdfIn PDF document text
    • http://glcore.net/ckfinder/userfiles/files/48562078784.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/54668215138.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc26d59e63---wupumemewepomujapogula.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/64649gegu1ku0okvv5kj6chrc2/wifepada.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/880b155bcc74495d903d16ec354b0107/36850974753.pdfIn PDF document text
    • http://unseenadventure.com/userfiles/file/64070302798.pdfIn PDF document text
    • https://arerp.kr/data/file///79204258753.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/lr1iouh4bmfto1372jobo5t49e/wukalizibimelixepeso.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/jj8a4u51sj1avgbs0t934smafa/resunalasope.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/86g2v071ckod6jgq59tirg84vp/rizituduzumavewewatolu.pdfIn PDF document text
    • http://livingkaneohe.com/userimages/todulubudewogujibom.pdfIn PDF document text
    • http://ptaki.info/imgekoprojekty/files/47069711827.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a8feff2f1de---30491116035.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/uuo5ioeo3m8eks3r747au4olj0/20121708467.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/67558512976.pdfIn PDF document text
    • http://djarkitek.com/temp/vinney/HTML/userfiles/file/56846506315.pdfIn PDF document text
    • http://deltools.com/userfiles/file/jumutawoxurudixoza.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b68a511b0b---1184085676.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/89337559862.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/q4b542qajda4l9ifp3kiaindgc/nomegedapujenaz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05C 16200 bytes
SHA-256: 0181ce3ef791cc16533cd346b11227abfd0ad563f230949d2689d0c0dcc93462
font_01_sfnt_off00010a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A58 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001226f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1226F 10492 bytes
SHA-256: ba2c75dca6e291935f432900a4341c6c2571fd137a596676cea80f4dec3415ba

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