Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f02f937b35b73a…

MALICIOUS

PDF

98.1 KB Created: 2021-08-20 04:28:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: cfc2470f2c4fb6ffc678c4ef91041eb3 SHA-1: 8ae1f1e473b3940e72d8f9f23ac7394d90b04ad2 SHA-256: 06f02f937b35b73a5b4fbbfd435e03f862ce1b0d9c5e7f430088743aad6e1394
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to PDF files hosted on compromised CMS uploads and disposable domains. The document body is heavily obfuscated and unreadable, suggesting it's designed to obscure its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 http://tofuyatogo.com/uploads/files/tabolajubasoko.pdf In PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/af4c68e3ff76154eaf90c849d90ed091/zemevekipomevid.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/zevuzabikixu.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/6176f2ed23b42014f7b4bee1ce118974/4275135579.pdfIn PDF document text
    • http://lapawan15.com/shop/fck_file/file/9725038133.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/e236fb5d0addd03ee6c29a7396e763cd/rugotomasuloluxopejivo.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/kamuwoxovirolexo.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/49321606351.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202106110759553068.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/6e9e400ac4446d222c4771c186a1b8fe/junajivitozutupimezi.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609668df2529f---zinidegepo.pdfIn PDF document text
    • http://rafaelokazakov.com/file/wizapebupi.pdfIn PDF document text
    • http://chinamakina.com/userfiles/file/82264899655.pdfIn PDF document text
    • https://ceccarbotosani.ro/userfiles/file/siworegaxijop.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios//files/guxaxutumigu.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/45436450729.pdfIn PDF document text
    • https://actorconseil.com/files/file/petipuxino.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/be65489784b80a1c9834aefc951e2414/21383077008.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/29890029df4fcbb1996a631a032894f4/40369102358.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/48471232999.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/ae5ff068f8574a648c1e35bb5abe8a4b/22495484163.pdfIn PDF document text
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/76391616258.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/14n872712jf4lqcg18cd0lmc4o/javererabubazikigok.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/madatetuwu.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723a2beba42---42170769361.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=anjaan+special+crimes+unit+season+1+episode+15PDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001187a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1187A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13091 11072 bytes
SHA-256: 60680213bcefecb3907759e043cedbb2b89d0fedb76dc11881554bbfa8db6589
font_02_sfnt_off00014a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A68 18052 bytes
SHA-256: 6343137f0e880cff13adb21426911026b2bc4d834da067e39a2aa01221f0df50

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