Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c96bf9e0863dbd…

MALICIOUS

PDF

70.3 KB Created: 2021-09-07 09:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0fc351544f7b20d81a1fe767a74f46ee SHA-1: a5aaa984bde31dc162b33490e1f7287268251715 SHA-256: 32c96bf9e0863dbd554045207546cf69ef095dda97d6fb12cde1703be7346893
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3555

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 http://www.premiumimport.nl/ckfinder/userfiles/files/24348318043.pdf In PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/0e1i3l62i8bb8mhfdjb784hlpj/85179763585.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/2aeec4c4398d9214f90d4ec01adf1689/8963750865.pdfIn PDF document text
    • https://penzion-palice.cz/content/zirurulifoposinakejo.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/0097f7be97d08be4adc3410ec2b9223f/4201254018.pdfIn PDF document text
    • https://aneri12.eu/res/file/78218483065.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/nuseponerin.pdfIn PDF document text
    • http://ridendo.cz/files/file/54171585386.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/i6ll89o1vnsrivrt5v96dofhqr/46330099878.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e04d94aac---zokenobirifugo.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c016b928---11066387801.pdfIn PDF document text
    • http://onlytech-tunisie.com/userfiles/file/moregesigetin.pdfIn PDF document text
    • https://bakwanudang.com/contents//files/mokijikiriwemarewug.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e9eb45d9a---sunegor.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c146c7ba50---mixekifakigadomakisawa.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/f4471dcea9df9c4c8b612f3ed12c1692/28750482888.pdfIn PDF document text
    • http://richiefamilyreunion.com/clients/7/7d/7d03816b951c94fc7c065ced7c7ccdcd/File/70685661320.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/5293037099.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160960d5c72017---24220215541.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/5d21d7574a61b2e7abbd669806e072c0/xufere.pdfIn PDF document text
    • https://ncvpte.in/userfiles/file/rovek.pdfIn PDF document text
    • http://alanurturizm.com/rsm/files/bebujuluduf.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612116b8f1105---tirokinodabezolefexajujop.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/25334856163.pdfIn PDF document text
    • http://ybshajiang.com/userfiles/file/2021-08-11/210811160802809714gtzjmtjdx2oz.pdfIn PDF document text
    • http://telektrans.hu/editor_up/63205115750.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=ford+fiesta+2013+se+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A2 17108 bytes
SHA-256: a40ddd0749b361b895c3cc718da7f6f457984de4b72136a8c50290f947c08de1
font_01_sfnt_off0000f216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 11060 bytes
SHA-256: febbc3892023c1b2c2a1682aae3909880d39cc423528cf79a96e1ebb0ba636f8