Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d2251555741ff7…

MALICIOUS

PDF

79.9 KB Created: 2021-06-20 05:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d0a2a4ee4bbc8a5819d056e9eff7683e SHA-1: 03ad311924e96b1cb8138f5fd58fa2905c412794 SHA-256: d0d2251555741ff7a93765c45acc22c2b91d272ca14f70d500709d11669e6915
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 https://areicon.com/images/file/niwaxifajokad.pdf In PDF document text
    • http://cukiernia-waltar.pl/qcms/userfiles/file/95997522973.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/f585d8baad9636071f6728d2ebd20202/lifekuweniz.pdfIn PDF document text
    • https://ancoraeducacion.com/images/31302818815.pdfIn PDF document text
    • http://infinity-pro.ru/userfiles/file/88496393196.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16079bb66a30f5---laluxigitavokid.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/eua0e0oob6vkade41rn81j2850/40718788024.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd8ac09455---fupego.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/b3e45dd72d95fef94785ade2699fd32b/10664163986.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16096b6f8bdb42---rejowofijobu.pdfIn PDF document text
    • http://metapolar.hu/tmp/makewodirinaxutagar.pdfIn PDF document text
    • https://arabacioyunlar.com/calisma2/files/uploads/pixus.pdfIn PDF document text
    • https://designcoordinators.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607561f829b38---fitaliziwofositosasotizo.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//43600940066.pdfIn PDF document text
    • https://reinigungsfee007.de/wp-content/plugins/super-forms/uploads/php/files/gec47unv4ins925883soi34aak/60186235845.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/f3894e5a08996519117d59197899a165/lavotoduvulen.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f631cce6da---78115551242.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/5jquqr9cdtgqne5br0tfadft86/tevofemolorudewebawibiro.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/32573202855.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=telugu+new+movies+tamilrockersPDF 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3A 5164 bytes
SHA-256: 9e3bff11fdc467b9a67034235b3c23aea97a43a71acd4dc28b039564d69694e2
font_01_sfnt_off0000fecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFECB 11000 bytes
SHA-256: dfc96968527c0e29661c6ce71be12747732724e32ef22e8e354535da3c24e083
font_02_sfnt_off00012485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12485 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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