Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0637f4fe5d83b86…

MALICIOUS

PDF

86.5 KB Created: 2021-10-16 06:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 134dcc8faaba37459df1f7885a11c769 SHA-1: 0b9ade719c5e813830233f7e4a017d1129116f24 SHA-256: e0637f4fe5d83b86df94ba506838344561195d1d18f3808eac611c2b0d20f2cf
156 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 websites or disposable domains, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery through these links. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://irlanc.ru/uplcv?utm_term=system+disorder+ati+template+example PDF link annotation
    • http://smartpaintingplus.com/userfiles/files/4565086711.pdfIn PDF document text
    • https://orangcar.com/app/webroot/upload/files/livuziwiki.pdfIn PDF document text
    • http://aeusjtu.pretty-match.com/upload/files/morelazedotegofit.pdfIn PDF document text
    • http://srs-budapest.hu/uploads/files/sazosigelakupiwofuwujoxa.pdfIn PDF document text
    • https://mimpishio1bet.com/contents/files/77715066080.pdfIn PDF document text
    • http://scro.ru/pic/file/xudifujatotava.pdfIn PDF document text
    • http://phutungotodungha.com/img/files/15405674759.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140f8bd8b3e5---86063142846.pdfIn PDF document text
    • http://sicompk.com/survey/userfiles/files/mokalewodub.pdfIn PDF document text
    • https://egyseg.eu/ckfinder/userfiles/files/16343542080.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/d8b67db377ebcbe7766e1e81563e768a/fegusafawudejodol.pdfIn PDF document text
    • http://esrafisek.com/images_upload/files/sigote.pdfIn PDF document text
    • http://aristosaigonhotel.com/uploads/files/kuzetetagiwidonegewufem.pdfIn PDF document text
    • http://gamaxmotor.cz/data/dokumenty/90329000606.pdfIn PDF document text
    • http://tjjjsh.com/uploads/files/kidesapuka.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/63229435290.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zinerusufovudunurabo.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/47803050419.pdfIn PDF document text
    • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/zutetotaxip.pdfIn PDF document text
    • https://pepsima.biz/files/file/20306937051.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/75170322095.pdfIn PDF document text
    • http://cesvil.it/filesUploads/file/17154820032.pdfIn PDF document text
    • https://shoppingplanet.ro/ckfinder/userfiles/files/30574707289.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16155cda213767---belevagofafinalutaxefam.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98E 17232 bytes
SHA-256: 7aff4f68dc5339da5203abf1e5e228b2cf1630d6a47efb93e44025366028b08d
font_01_sfnt_off00010594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10594 10740 bytes
SHA-256: c786f0940bf37161e952f3ce57439bdb082b8e3107a8092793a6510ee8bc4aeb
font_02_sfnt_off00011e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E48 16140 bytes
SHA-256: 00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b
font_03_sfnt_off000133c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.