Malicious PDF — malware analysis report

Static analysis result for SHA-256 078d405b459b419c…

MALICIOUS

PDF

87.4 KB Created: 2021-09-01 10:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 44e7741e37992350393b5ffcf9f47501 SHA-1: baf9494409bbb40167e217bbf9c798591ac82fd4 SHA-256: 078d405b459b419c77a87b3af057fc37bd0fb34c8dabdb475042ba11ece3a7bd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://queure.ru/uplcv?utm_term=roast+pork+convection+oven PDF link annotation
    • http://alphasigmaoverseas.com/userfiles/file/gapofiri.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cd9340f2f---58769754492.pdfIn PDF document text
    • http://leprofit.ee/cmsfile/contentfiles/64372187914.pdfIn PDF document text
    • http://zentrumok.com/userfile/files/25808213753.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/33954973617.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/5190g1494bea79nkt6ef917i9d/govakova.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/tegizobifalekeweripaziwil.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/f1dd65ea2d425a57c80cab0924228392/9418083834.pdfIn PDF document text
    • http://poongdung.com/FileData/ckfinder/files/20210808_F900FAE83731FDE3.pdfIn PDF document text
    • http://gestioniarmatoriali.it/nevurojekazexepivomu.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/75131566112.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/tesixem.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944af95bcec---fokudupibupabixazozafexa.pdfIn PDF document text
    • http://zjleiou.com/images/upload/File/48992013894.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e936c390810---3500558607.pdfIn PDF document text
    • http://thunderstar.cn/userfiles/file/20210719184632894177546.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/nezodevojesebosaz.pdfIn PDF document text
    • https://frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/54242100497.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/muwubadu.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/dfd3dee7d0c425911c5fe200a6f6fb0f/13381418591.pdfIn PDF document text
    • http://chlahb.com/uploadfile/2011/new2011617/files/2021/08/20210821041206.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608249a91ab32---87064797984.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab34c7eb63---tunuxakewesasiwibemo.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_off0000ef88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF88 18244 bytes
SHA-256: 6a9a865b7e394960ac12329fc0af0117db05bb1f033404c0ce648ae515836e5a
font_01_sfnt_off00011f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13719 10524 bytes
SHA-256: f105e97d5aa17c95d35d244fc0c0faa42c741c8c2c43ed3373ccac80f394716b

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