Malicious PDF — malware analysis report

Static analysis result for SHA-256 002fe79c119bb448…

MALICIOUS

PDF

82.3 KB Created: 2021-09-20 22:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: df4f7110bd878b275655c5a229ed4e07 SHA-1: f6ee077e1fafaaf5dbce371c194fb3b432d5f8da SHA-256: 002fe79c119bb448651d800fe2c14fa605f71a81c0666b3aade524435b1d033d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external URIs and link farm patterns, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to lead users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://drafthe.ru/uplcv?utm_term=imo+mod+apk+download
    • http://vdadanang.vn/app/webroot/assets/files/zazafalalafuwami.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/126f61b7e933389e8b522c63453885ae/49776982959.pdf
    • http://szzxwx.com/Upload/Upload/file/2021916199468990.pdf
    • http://westhollywood.ilovepokebar.com/uploads/files/wonesinajalemuz.pdf
    • https://transilvaniafishing.ro/app/webroot/files/userfiles/files/gebajofiwela.pdf
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137e570b128a---sugud.pdf
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139adc9a7901---litolirevepagi.pdf
    • http://kes.org/upload/editor/files/44364420291.pdf
    • http://ediljolli.com/userfiles/files/zopusubexujixazitabi.pdf
    • http://zeci.nl/im/image/puwilerubemekoxiret.pdf
    • http://studiorinaldibedin.eu/userfiles/files/zetiko.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16145303862758---69011239230.pdf
    • http://www.peritaonline.es/ckfinder/userfiles/files/18184355698.pdf
    • http://55pluscommunityspecialist.com/userfiles/files/bolonidigu.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/71c1479f39e4b6bab372991bd74b1fff/86283467838.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16134a40d836eb---35327565673.pdf
    • https://slide-bearing.com/d/files/lumedexanajelezatidewak.pdf
    • http://fashioneducation.ru/userfiles/file/90986425181.pdf
    • http://amandamaitland.com/images/file/37830043922.pdf
    • https://calson.garment-pro.com/ckfinder/userfiles/files/15855260445.pdf
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1613729a755164---niveso.pdf
    • http://estatepie.com/files/userfiles/file/fagurojaxifidejir.pdf
    • http://foto-klub.dk/userfiles/file/pojazofobazogarurapebir.pdf
    • https://campfun.myhost888.com/upload/ckeditor/files/kedikelevapojofekoxi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e028.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE028 16792 bytes
font_01_sfnt_off0000f83f.bin
ae79cc0c8209c1180ee809633d9dd937cfdcc288ef886bc5ef5d8a67032ba913
pdf-font-stream PDF embedded font (sfnt) at offset 0xF83F 10092 bytes
font_02_sfnt_off00010eac.bin
571f9fab7d98dd2c51c72790061cf0c0fe52cfd5376bda816ca66cf347e741b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAC 17484 bytes