Malicious PDF — malware analysis report

Static analysis result for SHA-256 202601dca5e5e561…

MALICIOUS

PDF

73.0 KB Created: 2021-09-05 04:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e0953c2c9116719bb7f4b3cc726395ea SHA-1: fa2b892876337450f9ec447e21e8af61fcb98950 SHA-256: 202601dca5e5e561e6a89d4ec2586d188d26feef348a01eb2fbc10653a609a22
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm that points to numerous URLs, many of which are hosted on compromised CMS uploads or disposable domains, suggesting an attempt to distribute further malicious content or phish users. No scripts were extracted, but the structure and URL patterns indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://banghetretruc.com/media/ftp/file/danitefefilosinateduro.pdf In PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/e2apc8ebe041dih0fe2otvrn24/57224472392.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8f85983aa---nivufinikipalewoz.pdfIn PDF document text
    • http://cepsagibyachtfuels.com/images/photos/66189505204.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/rezofimipowexexo.pdfIn PDF document text
    • http://alkanboya.com/files/file///79049605323.pdfIn PDF document text
    • http://veterinariomauracotti.it/userfiles/files/7110057785.pdfIn PDF document text
    • http://gnatowski.pl/attachments/file/zovuvubefobutadabaxevap.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/64178216689.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609e1c9d730a3---vakiluwem.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/786f9e07c7a35b90b8676e0e18932ade/25792699895.pdfIn PDF document text
    • https://apotekatia.ba/fajlovi/wapem.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/ridoxewenuferumelegekife.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/rudasi.pdfIn PDF document text
    • http://bookblog.kr/data/file//files/jebiwijila.pdfIn PDF document text
    • http://k3projekt.pl/uploads/userfiles/files/mupujudosetomafebaropije.pdfIn PDF document text
    • https://voziky-paletove.cz/mctree.cz/pictures/other/files/95830093341.pdfIn PDF document text
    • http://abwfinlay.com/uploads/files/60373225701.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/14f7b9952338cb5890bbb6aa4a8c5db5/vesizulolojidenufodixobi.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/pixijuvalazotuniva.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8c63b9d341db625b6b0a868e794dc0f4/rofekisekuvefipazid.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/piguxopa.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/o7mdv0ogk98bqr2v5rs8nel3nu/19072212866.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=processus+am%C3%A9lioration+continue+pdfPDF 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_off0000b9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E0 11036 bytes
SHA-256: d575a571aff377e034476a3e7fdb05851ff3b8d8643bdff584e9287b99624823
font_01_sfnt_off0000d33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33A 16336 bytes
SHA-256: 9ea2967a29661cd459a9bdbf9da09630bfb0985790d50493337bccc494dda3ec
font_02_sfnt_off0000fbc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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