Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfbf22a74f1eb801…

MALICIOUS

PDF

94.4 KB Created: 2021-07-16 19:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7ba2e37be9d42d5df9885dbab75b2ba6 SHA-1: f788405a9ee08d07db981fc80e0cf4fab33422e8 SHA-256: dfbf22a74f1eb801cc2f2d83dc6ece1fdfc6fa3aba47559800588ab35590d260
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS platforms. The presence of these links suggests the document is intended to lure users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://radmangroup-ye.com/rgfiles/file/tovukufetijojogap.pdf In PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/0bd91c0b0bb350553bba29720a5c2bae/zasusamuzimujevasevo.pdfIn PDF document text
    • https://vietfun.com.vn/wp-content/plugins/super-forms/uploads/php/files/7q9ho2tfvlupqpjr7q04iajlpd/67848339586.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082da32dd46b---68139328066.pdfIn PDF document text
    • http://thebellingerfamily.com/clients/0/05/05034faaa501c69409a7459485cba135/File/10392502641.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c900d9487e---42645656539.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/gotujigifisufosamabope.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/1c21ba16870dd39f2c66269f8445eae4/wipusimiv.pdfIn PDF document text
    • http://oresteruggiero.com/userfiles/files/zutudusawev.pdfIn PDF document text
    • http://studiocalcinoni.com/userfiles/files/11343352711.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/ng6c34q8mchu6au3j5soo0pr9j/tuzotobi.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd338e9347f---goborek.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/jexutilar.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/6151fe0fb564924e1b9466db71e9ada7/dukeb.pdfIn PDF document text
    • http://9meclinic.com/ckfinder/userfiles/files/gabibegowadalaxugaroti.pdfIn PDF document text
    • http://gdaniec.com/upload/files/67021227323.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b066ad9e6---65456702118.pdfIn PDF document text
    • http://blissworldbeauty.com/newerac2c/userfiles/file/23944757290.pdfIn PDF document text
    • http://3lbordercollies.com/clients/a/a5/a537dd6ebb785c9f51a9b4acbfea693c/File/5563479256.pdfIn PDF document text
    • http://haus-st-otmar.ch/userfiles/files/97071334204.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1baae3f97---fawaniwizaparube.pdfIn PDF document text
    • http://ciskmv.com/css/file/83014558251.pdfIn PDF document text
    • http://chromavials.com/d/files/mawufufuviv.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090d5abd0696---4428495749.pdfIn PDF document text
    • http://grandinhr.eu/images/user/file/68521007405.pdfIn PDF document text
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/fefigogegojularogexujel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=drive+me+crazy+full+movie+online+freePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00013286.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13286 18972 bytes
SHA-256: 1a37957464c0670227161976435400a6707dcd89e0226b2dcb0c3438e49f7047
font_00_sfnt_off0000ed66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED66 10572 bytes
SHA-256: 8c3af0375787d9fa3e9c0c354639105a2ef351db36fc690800c36c1115a11198
font_01_sfnt_off0001058f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058F 17124 bytes
SHA-256: bbf7cc5f2200d49e804b7e74110a606f26079ee9afad7e9418c469f6cc2329ca
font_03_sfnt_off000151af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151AF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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