Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34aac8aca35199f…

MALICIOUS

PDF

90.3 KB Created: 2021-07-14 06:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e2004872e3599272125d2c449e6947e9 SHA-1: 2b89e9fc8eb63d16273a04fb3ac391b119aa6bff SHA-256: e34aac8aca35199f7f648a0e4bea0970b3b453fe77232ec0953936700c4530aa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, containing numerous URLs pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is to host these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://www.irrv.org/uploads/files/ragimaliginitofa.pdf In PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ql4d8n0rrv9kapmggm7cdom613/xufumelujesefolotip.pdfIn PDF document text
    • http://petersonspann.com/clients/3/32/32c4b2f41fa698b5b938e848169c8dcb/File/dujif.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/1d9c6ffe69e1760f308e828cdb8844e7/45157056005.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/33352ioiq8jtd65m6ljme19pgu/29329240122.pdfIn PDF document text
    • http://homeopathyhongkong.cn/files/xesawo.pdfIn PDF document text
    • https://flyags.com/editorResources/file///taxirog.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/nemapoxagogusewokodel.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607618922f1b8---11945696478.pdfIn PDF document text
    • http://didongsinhvien.com/upload/files/vonoxol.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de1015b2cd7---99439103266.pdfIn PDF document text
    • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/73705814840.pdfIn PDF document text
    • https://limsurdua.com/contents//files/82983115331.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0eba79ab4---xesudibasagaxanomozosagak.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b187c8484f4---mofiwojel.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/b8097f7892bc82d7da84b4d9d25d4b45/16477169690.pdfIn PDF document text
    • http://uniquehotelsolutions.com/files/others/kagoxukixumo.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/4055ab0cc867731bf44efdaac28e05ff/gizavakazefe.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/fbgqnmg17bmg2rhorlshgi0e1g/92766536022.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16094158df12c5---fogaxigumelonesidutelalol.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086332ab5e6e---36816770233.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9e0c2e967---65376620450.pdfIn PDF document text
    • https://edu-mate.kr/_UploadFile/Images/file/41016366479.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/gbei2qmfd13h18dth72cv2p7aq/56307929998.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=finite+dimensional+normed+spacePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E0 10652 bytes
SHA-256: 3305cef3f06196d6b12af4f421145413650bfb5aac2d9462c62755551c2d734b
font_02_sfnt_off00011135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11135 19108 bytes
SHA-256: 57e1f4c3aad6522eb09b1343acf055e10e0e0be8e803449119ecfa635f5fb97e
font_03_sfnt_off00014480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14480 16468 bytes
SHA-256: 7fcab46e55fb42d02db7d9e49765b2df5aa95e570408720f212988f7e5716832

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