Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4716e5c5dad6f7…

MALICIOUS

PDF

108.7 KB Created: 2021-06-28 09:08:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: d2ba211851873b2823dc65c43a5e6998 SHA-1: e4b0b2d4bcf3dd2ad5d528159e0eadb6946d1ce3 SHA-256: 9e4716e5c5dad6f786b8c958d1f040551623a130a326ce93aff11d1ae6e2d9b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various websites, many of which are hosted on compromised CMS platforms or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, but the structure suggests a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9666

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://garglob.ru/uplcv?utm_term=ugc+meaning+in+english PDF link annotation
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076001e1a0a7.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/siroz.pdfIn PDF document text
    • http://cmtsport.com/pliki/99155191845.pdfIn PDF document text
    • http://industriefotografie.ch/userfiles/files/kaxelopidi.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c3b5bd257---43048051147.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/jawuwisudox.pdfIn PDF document text
    • https://activepymes.com/pub/file/xipowivigupirefugodisig.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1ba910c3b---xevifaxa.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/72a742d85d7305f4a70ee73dfab02393/91510177609.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a356c4571d0---mejamodijuwi.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/rlfliknd345ptk02oi3kn6ln44/89501489510.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/6d24c33c99990b5e94529cbf0b352c6e/24131938715.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16243597045873.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e5a070940---74139284150.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/7422041630b2306b595fe8a4e6d282d7/37515812740.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/84308960562.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608d997135301---52726011611.pdfIn PDF document text
    • https://proxus.nl/file/17860978193.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160b601f80aaac---98540368831.pdfIn PDF document text
    • http://creatinglifeoptions.com/userfiles/files/namesapulisi.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/8b8b75a9be5abdc0c985bfb3f023e428/49927250474.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/a0b1ec6496feadd222d2121d32ade653/funerimuxikenelajil.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160816c870f54f---xekoxupexe.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/5955d87ee2644ca7495bfde819f92965/50391544564.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///81795680308.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/e0bb1430d9c5902f640f4d2496bafad2/nefaturekusiko.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0001409b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1409B 29948 bytes
SHA-256: c1fbcb6be4af8f06951e823ccc69991c3212bef9a51a1b52931b4a6f06dd07be
font_00_sfnt_off0001111d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111D 17976 bytes
SHA-256: 1bad2437b3e7550c26b5220b237a0bd4972d4267070856c0d852dd29aa4b53a4
font_02_sfnt_off000175e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175E3 10364 bytes
SHA-256: 6e23f49e5b973655f76bbb452fbe53c89a3b782f635ce8a8d863759f11608f34
font_03_sfnt_off00018d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D0A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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