Malicious PDF — malware analysis report

Static analysis result for SHA-256 e268ae02029877c7…

MALICIOUS

PDF

85.2 KB Created: 2021-09-16 15:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bda3e700612fa47483b4a2e4947687ed SHA-1: 870e6448499c4c77943238070befa85eef65a1a6 SHA-256: e268ae02029877c7afa3d86f4fa1945b0d6ed673553e724453c51308dc3e385b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm or phishing lure. The presence of embedded JavaScript, flagged by heuristics, indicates potential for malicious scripting. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or redirection tool.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=the+amazing+spider+man+2+full+movie+free+online
    • http://master-vin.ru/files/file/91610172452.pdf
    • http://yds-wcv.jp/free_images/files/pidesupen.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/stdf3iamornp819udns9ke4jt4/luvegojokotaridoli.pdf
    • https://magnanelli.com/userfiles/file/53461526233.pdf
    • http://landroverbh.com/ckfinder/userfiles/files/33223759696.pdf
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614172a9dce5f---rejebob.pdf
    • http://tehpromyar.ru/media/file/92518887764.pdf
    • https://coop-alternatives.fr/images/images/92685025098.pdf
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613b81568c9a7---70367505867.pdf
    • http://efuegypt.org/userfiles/file/kubogoxifazajurubokepo.pdf
    • http://dalnoboy.net/data/filestorage/upload/files/dibuxijebazedodozomisep.pdf
    • http://peach2560.xyz/js/ckfinder/userfiles/files/65588712658.pdf
    • http://incomingmakedonia.com/files/files/11450815581.pdf
    • http://lovepetclinics.com/file_media/file_image/file/jatiwupemogeve.pdf
    • http://srilangkapools.com/contents/files/mebetodonopikezobanejine.pdf
    • https://rmduncanrealty.com/userfiles/files/limibegajaveg.pdf
    • http://www.psoealora.es/ckfinder/userfiles/files/butibalakidilolebesazewaj.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/01v0ek39rtegona73eaqe3bsi8/29943326541.pdf
    • http://builderall.info/userfiles/file/ruvavalumaborixinapok.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/16kidsj8vmiuahud4cqkovg829/viwanuxubevanilufefoj.pdf
    • http://wohingltd.com/userfiles/33886953620.pdf
    • https://k-newsletter.com/ckupload/files/malanomidanif.pdf
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/gofedoku.pdf
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/44bdbc8e445a9e932eb979c7fc974cd3/44821396161.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_off0000e3a3.bin
4a865fe075090eb5a7ff45f636cc0d58ab7af4bad0bc7a45f3cee96102f7ac77
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A3 18956 bytes
font_01_sfnt_off0001150c.bin
5d286db5b3a89203b339e40840490def50b7cd42ac76ff97da71a773640fa20f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1150C 11156 bytes
font_02_sfnt_off00012ec4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC4 16792 bytes