Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0c20ffab58ac26…

MALICIOUS

PDF

86.9 KB Created: 2021-07-23 11:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 5cbd75119862c67890c4193417523cb7 SHA-1: e1a54f82f6f54f06473460c8a57ef94bc65feeed SHA-256: 0e0c20ffab58ac267ee39b31a6484520adb4c98ce6af39b0d350952953e0886e
156 Risk Score

Malware Insights

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

The PDF was flagged by ML and ClamAV as malicious, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised CMS uploads and disposable domains, suggesting an attempt to redirect users to malicious sites. The document body is unreadable, but the overall structure and URL analysis strongly indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://ajtoablakcentrum.com/_user/file/67021997936.pdf In PDF document text
    • http://baohanhranghm.com/upload/img/files/66768612105.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/67dfb297efc9152a20b4bce8f9ab317a/tikojidinekuw.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/99896615070.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/27eiig64hhq90ipv7g3octvfi7/fawibonunuvane.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb93054ec8e---82314992399.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d7724b5a8c8---nopijizidotig.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e017862e298---jufubawazisizavi.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/75477005593.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/jojetoxafipugalapi.pdfIn PDF document text
    • https://stayatrosetta.com/wp-content/plugins/super-forms/uploads/php/files/nn37lg73uehtl7nj5ut05scmpu/4058948981.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/kvc6b5a5ggslok3itfc26brfoa/87645925288.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ea426e22f---davepogudewejeturela.pdfIn PDF document text
    • http://lordbeaverbrook1973.com/clients/76835/File/28258106755.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/wuxenuboduvexukabenejike.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f0827f538d4---bisewesubafejagofaguj.pdfIn PDF document text
    • http://prodottoitalia.eu/userfiles/files/80768650447.pdfIn PDF document text
    • https://mszukam.pl/dat//file/68349586467.pdfIn PDF document text
    • http://qhzs88.com/admin/fckeditor_upfiles/file/2021072312295880554.pdfIn PDF document text
    • http://at2apigroup3.com/contents//files/8337037705.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/7etba0s7agfuhjbvoo7g3755pf/37611741072.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16082147fdb6f6---72365148941.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/bf0c4d21f1fa61a3d46771ee9035fd5a/vamasawe.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/kimavifadepuvetisukuguriz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=which+planets+are+visible+right+nowPDF 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_off0000f271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF271 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A88 10936 bytes
SHA-256: 177fa8f15e84666fec32d86c15744a78c008e0b69a9aaf03fcff2de41a98c97e
font_02_sfnt_off000123b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123B0 16348 bytes
SHA-256: 216258e7f2e3d6ae80a7b45c4e504384c5e3e9f969f84a7c230b5aa7180cf495