Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b56fd1db659fcbc…

MALICIOUS

PDF

89.8 KB Created: 2021-06-09 12:37:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1e03a3ee1dc52f7b808297b9bb0e1bce SHA-1: d80d96d48976f39ab91e29883ee2c6b1aced22bf SHA-256: 1b56fd1db659fcbc5d7718d911fe53a51a97394255bd1f1c946462eb10de12ab
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further malware or conducting phishing operations. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7084

Heuristics 5

  • 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
  • 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://queure.ru/uplcv?utm_term=ielts+essay+on+government+and+society PDF link annotation
    • http://veraschwemmle.de/fckdata/file/boselavajawiwof.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/61de19469ac9619c9d4596dc603e8f75/setodebateduzikese.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/loubn68h4t2tmeu0ap97dfoj66/sibimif.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/3d69ec2086755bd8efe43faabf265beb/wapetesoxadazapute.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a29d73c798e---98792639343.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/1atssgmfpadvnn846qbuit44mh/16352690539.pdfIn PDF document text
    • http://aqs-group.it/userfiles/files/gowadanagaropuriludo.pdfIn PDF document text
    • https://gofropack.com/wp-content/plugins/super-forms/uploads/php/files/8c50dffe169b011544992414b6488a34/wuruwagidi.pdfIn PDF document text
    • http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c94e4ca368---6899762594.pdfIn PDF document text
    • https://damiel.eu/userfiles/file/ziveguvotigore.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608051aa61315---13034637131.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b6320f8f0fbf0331a09c59f06fe87815/78663042115.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/minezis.pdfIn PDF document text
    • http://narnivet.com/userfiles/files/42148373495.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/e1bf039ce192e0a78868cc5d63428352/40049195658.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160811eb815036---77407527003.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/cf51d6d1e58c67d8d5276df3eae119c5/10398521288.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/t8c53uusnnesei1i6i62fm1s9s/kamaso.pdfIn PDF document text
    • http://sistersaviopublicschool.com/userfiles/file/vubipipawu.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13610 1684 bytes
SHA-256: 8b69ad8bf8706a8de8604f0485c67fb25a23b24d50174afbb8bbf061f3c53837
font_01_sfnt_off00013e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E74 5360 bytes
SHA-256: 06dc0168f57a681075c285c9c696d0f2dd3727a27e8d10bd918ac7ba689397b2

Open this report in the interactive analyzer, or submit your own file for analysis.