Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d41159aa3070295…

MALICIOUS

PDF

75.1 KB Created: 2021-09-25 10:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: a0dc6f569149dcf27cf89d8ddf2788e4 SHA-1: 7d232b9ea4f94439dfdf82e19bee43f038309eac SHA-256: 0d41159aa3070295d60ab04f6cfb7faafc916f8d998eeb700d64097767ef9e35
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. The presence of a 'resident evil village 8 download for android' URL suggests a lure for pirated software or game-related scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://jubileejec.com/userfiles/files/refiwidijovabaferi.pdf In PDF document text
    • http://africareview.in/userfiles/file/ridinezomoniloduxusulom.pdfIn PDF document text
    • http://jeykrishnaclub.com/images/file/53089826250.pdfIn PDF document text
    • http://findingthegrey.com/userfiles/file/3494707297.pdfIn PDF document text
    • http://murito.fr/ckfinder/userfiles/files/4489067891.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/eebd86373628ddef211f8a50fbb716de/4617834787.pdfIn PDF document text
    • http://lamarchesainterita.be/lamarchesainterita/imgdb/news/files/sevasefuda.pdfIn PDF document text
    • https://stmarys-perthamboy.com/upload/File/totokazaxanatimuvajoradi.pdfIn PDF document text
    • http://taiwanquinoafamily.com/shopadmin/upload/files/57811088287.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613799024a132---13847081317.pdfIn PDF document text
    • http://materialdeestudo.top/userfiles/files/lutejefitudonukidizusimo.pdfIn PDF document text
    • https://australiancaravancentre.com.au/application/third_party/ckfinder/userfiles/files/17390359964.pdfIn PDF document text
    • https://www.medicalbi.com/ckfinder/userfiles/files/tokowezifupuraxujozepag.pdfIn PDF document text
    • http://rowadhr.com/app/webroot/upload/files/73629643974.pdfIn PDF document text
    • http://alltimescare.com/attachment/files/82024982063.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/fdcb39834bb72929af0f82b4b2be0a15/gutizo.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/62288019331.pdfIn PDF document text
    • https://aslplastic.com/ckfinder/userfiles/files/85623819016.pdfIn PDF document text
    • http://www.prodomasa.com/ckfinder/userfiles/files/vuletofitotujibiwofa.pdfIn PDF document text
    • http://tuderprogettazione.it/userfiles/files/fosixawopexo.pdfIn PDF document text
    • http://daglichtfilters.nl/ckfinder/userfiles/files/zobanogosum.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ed1be451d---gikapujeri.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/n23pr5sdjmd5irht07mm9rsgeh/44453882308.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=resident+evil+village+8+download+for+androidPDF 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_off0000bd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD80 18244 bytes
SHA-256: 25e294eba6578206a1466452c55ed65fb7819ad9bbca421130e6f1b53104c0b6
font_01_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000104d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 10936 bytes
SHA-256: 34a3a653b533ac8f0d3a29cbcb14a5d3067f388c0f5bc24f0c5372323db11e21