Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2670d34dc91995…

MALICIOUS

PDF

179.6 KB Created: 2021-08-02 23:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 891ab5874e2d5e96adc73aeaccc711bf SHA-1: 780f44bffbf248fcc58fc382f00a0a3349e3a0b3 SHA-256: 0e2670d34dc9199554e9be111f06723cf7d4f61969a1f5795824d4b405930da9
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution through these links. The document body is unreadable binary data, suggesting it's not intended for direct user consumption but rather as a container for malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7830

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://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/qm7l8h4f5hkjtmgvtsu60kbv32/50272713430.pdf In PDF document text
    • http://laconchigliacasevacanze.it/userfiles/files/51793227613.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/sasim.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8724cdeec---56297104402.pdfIn PDF document text
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/ramuw.pdfIn PDF document text
    • https://b2b-intelligence.it/uploads/file/rexikemeragegijegav.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/544637c9db600abbc1a52de72c2d4d41/78446885498.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/risuvuze.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c84bce522ef---dopokonemigupa.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/dhu571cbfgkkbaa2vs8kuge0h5/54808563979.pdfIn PDF document text
    • https://pezenasenchantee.fr/userfiles/file/7346828168.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/8a246d066a033ed44bcb521ad082dffd/tikutoguwo.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bda89b5e813---35852633701.pdfIn PDF document text
    • http://pp-aqua.com/userfiles/files/pitejibagirevid.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4c09730fd---80211123403.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/98c2d685f5475c9f5e7a2b898565ec76/riwanelojenizun.pdfIn PDF document text
    • http://biothiennam.com/media/ftp/file/wutukadowe.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/62452244084.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c3ab349604d3ff6a2971d7df56bdc3f5/43230224080.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/c0211a5557cac38ad208912b67aa4323/70179423092.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092784f701c0---12441234560.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/13301243395.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=libro+de+historia+2+tercer+grado+de+secundaria+santillanaPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26FDC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000287ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x287ED 16076 bytes
SHA-256: 8467c6bfdc06f6e62bce096f2f04102b162f7b00f0bd11e35caf2ba558a9b07b
font_02_sfnt_off00029d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29D09 19652 bytes
SHA-256: 10a9364a1f8f86f5a2c85048a8bcf5629d7569d786a2763a62df5b8302678748