Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e221a5c44d031e0…

MALICIOUS

PDF

42.2 KB Created: 2021-06-28 09:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: d164523e7630834686edc1328a498b94 SHA-1: b5d68e33db2c09801c69619413a0d4605661a399 SHA-256: 2e221a5c44d031e0fd2fc7c72ca221cb6f0eac7bc84d67a8e4bb9a09c578a177
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.7092

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074b8a1e7e3d---20452408540.pdf In PDF document text
    • https://unosms.us/userfiles/file/73303038449.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160733c23c2a47---wifotamewepo.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/82l8o5vevve216p0p361nuq476/42582944529.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16083a4b95457f---81176710511.pdfIn PDF document text
    • http://maynenkhiinverter.com/media/ftp/file/nezegisopa.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/3g45c297vjsqua8qq8fh07i779/86344408875.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/88533384537.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c32a474be70---tuwupugolitemew.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bfdf5c1ff83---59342952480.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160975ad7a0e03---mosiwomovob.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/36628643365.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160896add6da2b---34787269559.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/4a10312f3b7c708ce31531fc82869c62/23619372763.pdfIn PDF document text
    • http://pamat.ro/UserFiles/file/28246745948.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77aceb8322---87487930370.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/51337380835.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160be8a74280b5---vuxeragewiji.pdfIn PDF document text
    • http://emannsltd.com/userfiles/48784855204.pdfIn PDF document text
    • https://anup.bo/images/files/50457852317.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/5133970466.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/21218262723.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a71c1d5eaa9---80598839017.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/gofesiminapimux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=god+hand+game+ppssppPDF link annotation

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