Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7094cea746e2ab…

MALICIOUS

PDF

74.3 KB Created: 2021-07-03 20:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 9b2d4c6da6a1df93d9c237c15f2af508 SHA-1: 64c86e265327373e3217e0f5de1754135973aaf5 SHA-256: 2f7094cea746e2abdd22ae5376e16070c9357f2a4e47a467a2d2c1aaa4707668
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm, directing users to multiple external websites hosted on compromised CMS uploads and disposable domains. The ClamAV detection indicates this is a known phishing or trojan variant. The embedded URLs suggest an attempt to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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://1877painters.com/FCKeditor/file/59659373410.pdf In PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/14346398276.pdfIn PDF document text
    • http://esejsc.com/upload/files/gipuxudirur.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160dd7c7c373bc---66267746766.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/zelofoz.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aee285c3229---jalelupositegebad.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/f80a6a41260d075f6f60d08762334ae9/62551126832.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cbb6f8704a2---24338009616.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/56974156889.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/2e11afcc9ccbe7ce2ae1f5aeb3ac0863/kuxod.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/fekipiwaxateramelojem.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/2d28c07c8c8744eeadfd04fb07710f31/59586267983.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e47bea7b2e---sujutaded.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/4ce152af3e5b59839875bbbe87bcc00f/38544019222.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/9e9011fd67d30ac99e4bb4cd058e03f6/wusugulomadulozo.pdfIn PDF document text
    • http://starlightcelebre.com/clients/4/43/43e9139217482d7666ce300faf566241/File/figokoxu.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160771d6fee8f2---68225177969.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a291678fc8c---1720048918.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/9995o8gtfb5g282csmmj2v5onh/zixalu.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df4055aa1f3---51388957731.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609981fc4fb41---60661729644.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/d5ffd771c79e12df66fb155d96dffc99/42623487141.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/4e6bda8af0fd8cd1a0bbadddc097751a/suretagodagusax.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/wadajenunikit.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebb3865fc4---56318711032.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=everything+that+remains+pdf+freePDF 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_off0000d99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B1 10944 bytes
SHA-256: 221cec802b893c650af5d9a7af8b78cd0301db3c78e5813a3b8b0a806b4d0b5e

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