Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2062d575f33dcd…

MALICIOUS

PDF

80.7 KB Created: 2021-09-02 06:32:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fa9e2b3f0f87d50417dc9cf9c7a47cce SHA-1: 9bbb79ae9cb7daf108d94053058926ae40dadf59 SHA-256: 7e2062d575f33dcdc16284de982b14df8da0195abbf84a7815d2eec1b1fec7eb
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://synerhu.ru/uplcv?utm_term=yugioh+duel+disk+template PDF link annotation
    • https://peterdegendt.be/file/vaxuxinowulobima.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/15213307928.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/5fdbf566b4cd3fe3ba2e1bbb63bad496/mozowiratikokinaretupikak.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/kodukaridezuxil.pdfIn PDF document text
    • http://sarlampa.ru/upload_picture/84026234076.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/rnpf40t6k1ears0o3vkjipikeo/78512672163.pdfIn PDF document text
    • http://deryalvincotokurtarma.com/userfiles/file/tigegufaxunetaparav.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf4da159c54---vovapajuva.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/tawed.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/kg65anan6fi30gka1pskn1hr0i/99701135729.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/depamovowevogetisipob.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/vffs9v0ff668p06ml3rsqait8l/tivejele.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1606d059b85804---56294715904.pdfIn PDF document text
    • http://tischlerei-schlusche.de/sites/default/files/file/lujamo.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/76c2f79b6aeee34c44e93c3cc3baf569/wizipulasewudoxufowepox.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/29996511845.pdfIn PDF document text
    • https://vongtaytramhuong.vn/upload/files/91496439014.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a03255b51f4---33975286304.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c59827de16d---rakojajo.pdfIn PDF document text
    • http://slhs1958.com/clients/18590/File/pigozetakapon.pdfIn PDF document text
    • https://himalayanespresso.com/espresso_ckfinder/userfiles/files/68492111286.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/b1c2d6c753ebda11877e5dae4037f026/73769861021.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/0a2595e64018d577d865d1a8a8ea5521/83303066207.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_off0000d93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF151 10808 bytes
SHA-256: ddd70bfc8af53edcbbcd32bea0097608256fdfa243fd788e26101ddf25505067
font_02_sfnt_off00010a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A06 16776 bytes
SHA-256: 7a03ac4aa4001763204e156d23202375d4a990686763a9176ab8389891e83202

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