Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07a62f1f192c868…

MALICIOUS

PDF

93.2 KB Created: 2021-07-21 00:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 01db57d1640a400cddd1746653dff046 SHA-1: 7ec25e6111ab3b79fe467400e1eef4e07aa3672b SHA-256: e07a62f1f192c868e9f2118d7dd59749b442b5dd6572ca888a3f24e333efff7b
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised or disposable domains, suggesting a phishing or malware distribution scheme. The PDF structure and numerous external links are consistent with attempts to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://sunarchegypt.com/userfiles/file/jaguzet.pdf In PDF document text
    • https://mbzgogo.xyz/web/img/podborky/files/dijinijupinitofavabidetap.pdfIn PDF document text
    • http://clarkstownhs64.com/clients/2/25/255c49a504cbad61718694d8b78dfcdd/File/65981827763.pdfIn PDF document text
    • http://jarosi.hu/files/file/54112783179.pdfIn PDF document text
    • https://latework.cz/soubory/kanebatekokegebefofikuzuf.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/c0766927efe027f478df8470b6f3e016/67705345587.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607206adbe7d9---xijuzesiwexuwejimilime.pdfIn PDF document text
    • http://unityproductions.com/upload/files/38339564786.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a82e243bbf0---fozupetorisajafari.pdfIn PDF document text
    • https://medtek.vn/storage/file/waziwimalow.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9ea2dace6---lixezarep.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/71187233371.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160abe641213ca---55274109080.pdfIn PDF document text
    • https://aiwatopup.com/ckfinder/userfiles/files/29084992531.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/mamavavurutidazanajin.pdfIn PDF document text
    • http://deborahbrown.us/clients/860103/File/32834814988.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c94b9096c15---26246195989.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/lh8mkl9rtta1udud2h3s9kiuqe/61905591740.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160989a8e91842---guviverufajo.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021060113295832.pdfIn PDF document text
    • http://proxima-design.cz/files/file/69397546822.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/26235923595.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/1j7a9febdvtvkam61kdpkcrqnh/gozosurezajeruzegadamez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=logistic+regression+with+gradient+descentPDF 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_off0001067f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067F 10648 bytes
SHA-256: fb859a3c56dc7085270296e6dffca4a1ef4c344d586b29b50424fa7c094afacd
font_01_sfnt_off00011eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000136c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C2 18420 bytes
SHA-256: d5393c21154d53ca5cb1935b94b65d1bbf8e796647d7e696aaca1254583bebd0

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