Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab6730370994ea6…

MALICIOUS

PDF

79.6 KB Created: 2021-07-29 18:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4eae1f404774079b6fdeb2d30d8d318e SHA-1: da82cbfe705bed14527ae9d1e1e097d7c5b2f190 SHA-256: dab6730370994ea6cdc104a6aae01ebdae0e05b4033bc49d3bfb957be3502b54
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting it's designed to redirect users to malicious content. ClamAV identified it as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The file's structure and link farm behavior indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5756

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://tadimtursu.com/image/files/21515534451.pdf In PDF document text
    • http://arlingtonhigh1961.com/clients/e/ef/ef36f0800c0a5d5a0b00d5ecc8c3c6da/File/nokab.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16087efc1be2b3---mutel.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/d0b1c2f7fc3584b986bf49156e82eb57/pudabimifajolibabaxi.pdfIn PDF document text
    • http://grabnerestriche.at/75422641439.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/ojto0akcgcik57ptgcnhlv0403/zuliwosulimosasobalo.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160dc32dab5740---48063120604.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b8211d6c5e6---50083775074.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/d5b5c2734a1b184a3485f4a25bd48b69/togizuvirebutoxelavosi.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/zazevogabadad.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9ecc8dae9---76178139633.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1a9a404c11d55379741c977114af199c/kekurodokenubezejibara.pdfIn PDF document text
    • http://donkaew-furniture.com/ckfinder/userfiles/files/batujurova.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/5a6ab43f48ed55a4b20f70cc63ab2c33/mobupazodujekufif.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/v9b78bho2euosdetitae136afv/kugujipanatoxuw.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/91583598993.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/a980301ee819b66012d1c299ee65f233/towoxefedolate.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160fe56163c3d5---wezarufazow.pdfIn PDF document text
    • http://eg-connect.com/php_codes/Scott/VieauAssociates/code/userfiles/file/58229077340.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6dfb22c9b9---6993696528.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/46ea68d244b32837964049efcbc8aa21/rusizopapugewosukamukazil.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/78122016203.pdfIn PDF document text
    • http://sodrex.pl/userfiles/file/27425190498.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/felamexut.pdfIn PDF document text
    • http://baudoinfamily.com/clients/f/fc/fc66627f90e8a365851b026dcf169025/File/65851364881.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/dfba5c795af945109f2a16152b79725a/xusokisul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=physics+investigatory+projects+for+class+12+cbse+on+transformer+pdf+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001139d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1139D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1