Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9db133edb307022…

MALICIOUS

PDF

79.6 KB Created: 2021-09-05 10:03:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 7dff5e6f4d235bfad98a9463f2d0b979 SHA-1: 31aea8fc39cf3df08b41cfa0ad4c5ddf61c37fc1 SHA-256: e9db133edb307022d40bf55d1f586b7f8f11887373e5e55249b5ec9041d00808
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4855

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://pistant.ru/uplcv?utm_term=finmin+da+order+july+2019+pdf+download PDF link annotation
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d262ce25d9---bamubawupusotukedewizu.pdfIn PDF document text
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607290dc6928f---jenukoratigufezoluz.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/87892362607.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/e7db6582136e934fe3407881952a759a/92422366895.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/6bla3htmtvhsb7dc1bsv7ku07d/96084893878.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/fowusef.pdfIn PDF document text
    • http://stillwaterponies83.com/clients/74660/File/galakudu.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609966b45abb6---tixomuresiguxatalakazew.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/39458346058.pdfIn PDF document text
    • https://kapefashion.com/files/files/36574266651.pdfIn PDF document text
    • https://olamare.com/img/uploaded/file/bigifimizisa.pdfIn PDF document text
    • https://agermag.ro/mm/file/rakulu.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/77377905906.pdfIn PDF document text
    • https://ariaparvaz.com/basefile/ariaparvazcom/files/7067709934.pdfIn PDF document text
    • http://martom24.pl/martom/userfiles/file/wubujik.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/janamidubaxi.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/0646734e51d1124d3bb46873e5b747f2/49097867652.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160dd7758eb515---jenoxunema.pdfIn PDF document text
    • http://aotwresort.org/ckfinder/userfiles/files/68721025239.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2205d44a4---kumozifibitigajudov.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/jamugeguke.pdfIn PDF document text
    • http://impressivetravelvietnam.com/upload/files/novazixepuvezo.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160909d932e875---15131147315.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F0 18000 bytes
SHA-256: aad62db73726a9a41183fb13f62caccd7ce89900a57e7f4d851d9eda77e47edf
font_01_sfnt_off000127b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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