Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e3d7725b9e131c…

MALICIOUS

PDF

87.8 KB Created: 2021-08-23 12:31:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 345c722c35c52c6e137a7364553135ff SHA-1: eed50b70faaae9449c73437c74047c517645d71b SHA-256: 34e3d7725b9e131ca9796123f159080a541145e71b498310539c4a795370df55
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, characteristic of a link farm used to obscure the final destination. The presence of 'utm_term' parameters suggests a phishing or SEO manipulation tactic. No scripts were extracted, and the document body was unreadable, but the link farm structure strongly implies a redirection to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gikguamerica.com/userfiles/file/99418697485.pdf In PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16086d928ca653---jifufiz.pdfIn PDF document text
    • http://fqcycpa.com/jingkelun/userfiles/files/20210701205831.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/mosifewube.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/27958980258.pdfIn PDF document text
    • https://lionkingbali.com/uploads/file/pisozesuwefu.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608305674ac1d---90327629539.pdfIn PDF document text
    • https://et-auditing.com/userfiles/files/rutekovevafakimejudezabi.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/ea2aaa52cf16ba387c81bafffc13d5f3/86639777410.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/70445271652.pdfIn PDF document text
    • https://gloriamus.org/Uploads/userfiles/files/96677457459.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/2e0414dnalrntmo6j8n4ss6tne/pawez.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/99627237b23e9a901228cc26a421d45c/butowozixuvosanukip.pdfIn PDF document text
    • http://londonjip.com/userData/board/file/72901084833.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/3uh37p3tcvqba65m25taom5pr6/barubutenibuvikubebiwemos.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///zubipifopadozes.pdfIn PDF document text
    • https://luminex.pl/upload/file/92711398039.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b7a2c7794---33877302455.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16079dffb3ec6d---xekabekepuvagubopivox.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161202c3ee3503---fofitonejabafonefegafa.pdfIn PDF document text
    • http://cc-loges.com/uploads/file/712643076.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/91997554014.pdfIn PDF document text
    • http://polloricowings.com/uploads/files/kagivikiwupodozefifizo.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c842613c73---karotumadotunarafurenutu.pdfIn PDF document text
    • http://blueleaves.ru/userfiles/file/19249529658.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=baby+vomiting+no+feverPDF 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_off0000f524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 10716 bytes
SHA-256: 70d7ede76d5536b31af340ac2a885d0c5ab68d1d05285380229dd12201275389
font_01_sfnt_off00010dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 16764 bytes
SHA-256: 5632fe9639676e1d1e9aafdf02e27e6de411109a64a19e53e206f41d98396381
font_02_sfnt_off0001398c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1398C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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