Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd69b7abb16acf6f…

MALICIOUS

PDF

75.5 KB Created: 2021-07-31 09:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7c5ee6806536120ea88c3cb97f9ebc80 SHA-1: c4bfa53486c2ef38bc3a1f1ecf7fa03d2ec95595 SHA-256: fd69b7abb16acf6fecd2dc7a57de03e6b01d47db072d2beb6c623a979c358e41
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites or 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 0.9983

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 https://obermeyer-modemarkt.de/upload/file/83631990439.pdf In PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff9a0f0a7d1---fewubebafujizoba.pdfIn PDF document text
    • https://themalc.org/files/file/lokifipulibo.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160e54706c840d---domeraji.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/52888051022.pdfIn PDF document text
    • http://weingut-suppan.at/files/tibasavuf.pdfIn PDF document text
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5fcad5044---64972984868.pdfIn PDF document text
    • http://nickels.design/ckfinder/userfiles/files/99975094512.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/27172172318.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/07ccab1fc1056bad86736d26bbb49b36/6166043082.pdfIn PDF document text
    • http://dwhs79.com/clients/15834/File/pinajifiropezupaxenepifu.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608310d25d8a4---32318556315.pdfIn PDF document text
    • http://phayaotechno.com/UserFiles/File/1561460709.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/e52ef4d4790acdab91572639f9bb588f/jarapademuredolo.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/pv036sinhg0d7i7etbidk3osc4/mijuni.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160787970a304c---pozipibepemigagugaxoxaza.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210604201347.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/41578486239.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/pawaxaxisiza.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/635071c806759cee98b46bf25dbc3880/jezako.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d301e3c439---molujovek.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/xobukixipopupowerofikitax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=my+marketing+lab+simulation+answers+chapter+11PDF link annotation
    • https://lapdonline.org/file/88226560043.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_off0000c3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE6 11396 bytes
SHA-256: fca67a084da2f3e4ea27785ce768a7fc6e201685e5b2adc68168fc9f7d3dcdf6
font_02_sfnt_off0000f67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67A 15624 bytes
SHA-256: 23bb90929be1f53a22e42abd0c0cecdff81e3ce1ed3870063df0bbab0de1e3f6

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