Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae880151499792c…

MALICIOUS

PDF

89.4 KB Created: 2021-07-24 10:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: aa79e0d6669addf4e1aa5b52dcd19c5e SHA-1: b45966513c9d0b93c7bb3bc3fdea93b9f3d0502d SHA-256: 5ae880151499792c58e78c073843377c7e21c40358bc526b2680c7d812425a04
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to WordPress sites utilizing form plugins for file uploads, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/d63b1d9f62b939970cca216c92836d3a/59247382599.pdf In PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be7a47c96a6---93542472360.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/f8snivt2jqjv0rgl6fhocf3mo2/kararivowoxorod.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e543f8282e9---39354163423.pdfIn PDF document text
    • https://loctra.net/userfiles/file/dokezinefitozezelapa.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d778524d7a---25759392149.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a0c8c3b36---xedit.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078686b99ce5---sikatedulivenopakag.pdfIn PDF document text
    • https://kcharp.com/ckfinder/userfiles/files/fimejagad.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/28341520267.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/1098a8c40d1e4c270e89e3836379a208/razuxodefosudi.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/6a4cb4e9f5b08b59c82d8ee2277e2dd0/92321083426.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/3bf10fd09136a6c3e14fcc1b77a83f28/vumitapug.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/48112690138.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/zivikopenonilebokor.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/1bd0fed585773b30365aa27ab6d570d6/lusaliroxigoxipudedulejub.pdfIn PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/wabopades.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/fe113e80002f52fcf57dacba6e0dc5b8/kavunidaganirurefakinesu.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb019086c9e---xiguzinasexuvozuwo.pdfIn PDF document text
    • http://creatinglifeoptions.com/userfiles/files/33233704269.pdfIn PDF document text
    • https://ildiko-szepsegszalon.hu/userfiles/file/56165275549.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1609be6d199f52---xugoxitijavasopemedin.pdfIn PDF document text
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/ilmhialle17gi1ctjmb5gvfojo/rakisasasovakitegode.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=divisiones+de+dos+cifras+resueltas+para+imprimirPDF 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

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_off0000f098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF098 10948 bytes
SHA-256: 4464e2a1e163452968f20298daf5aff2cd2ab18f09c72a74a69587a3a9dd5ad7
font_01_sfnt_off000109f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F8 20152 bytes
SHA-256: 09ce151e35950661db6296c6374bc4d07b4a9f73705e165b5d69706cceee5580
font_02_sfnt_off00013cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CD4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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