Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f03d64e2d8b33b…

MALICIOUS

PDF

83.8 KB Created: 2021-09-06 17:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ca50d0adc184fbea5a255e680163c2f0 SHA-1: 0e9e7c73cbcaff017fed27c4520ca423f0f4e2fd SHA-256: 60f03d64e2d8b33b40a8c2311427f5da4f76af5c96cec50ddebaf27dfb3e71f6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of external links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://catamma.ru/uplcv?utm_term=sistema+registral+frances+pdf PDF link annotation
    • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/regamikuvogesajiwebu.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/29969592750.pdfIn PDF document text
    • http://unseretochter.ch/images/file/vozegujavove.pdfIn PDF document text
    • https://robert-zauer.cz/userfiles/file/lawisovuxibowojunebafik.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/wezugadudijekipakas.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/xoguwimiwozisumezozufexo.pdfIn PDF document text
    • https://davnosti.ru/upload/27923370135.pdfIn PDF document text
    • https://bikidi.com/UpFiles/WebEditorFiles/file/24542933892.pdfIn PDF document text
    • http://jurabos.nl/include/editor/file/savoxegubedodigu.pdfIn PDF document text
    • http://pulsarvn.com/media/ftp/file/2741401430.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca6c8ea7d4---sedanukavomenawiro.pdfIn PDF document text
    • http://systempro.kr/userData/board/file/xazotabaz.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/jibigugibufesijosediki.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/dabosiwumelobapupabo.pdfIn PDF document text
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/14f8cf1ef98d26bc8252930799ec34ec/90833003997.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/73dc9526778c13867d31edd980239c15/zesulunoxidumi.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/mopugudipofadonabepara.pdfIn PDF document text
    • http://trips-in.com/ckupload/files/48927339554.pdfIn PDF document text
    • http://dataction.org/demo/dataction/media/20330471812.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/96517263196.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/b77b9cb2a203032305323558f07d6548/xoduvomum.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094df76b6813.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610464a0ac3aa---86375484892.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2c5884304---16056336443.pdfIn PDF document text
    • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/2572379077.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e06d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06D 18732 bytes
SHA-256: ca870f5040c5432ccc387293e65328bbb9a1ebc6407d5cc2ff2277c10706e9ff
font_01_sfnt_off000110ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C2 10916 bytes
SHA-256: 8798b61c49578c454d7298a6010d9ff910c34c6d44221ab64fc7f743b2a98790

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