Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4e349ec2174792…

MALICIOUS

PDF

68.0 KB Created: 2021-09-06 03:37:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 7da525ef3216b40a57f73a551c18a631 SHA-1: 03bff2e3ae5b191e729537407c824d3ad3b35ec0 SHA-256: fe4e349ec2174792eafd57f91547e18a38de5cba1d6fcab6dcb8c808a1666a20
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 indicating a high probability of maliciousness. It contains a link farm pointing to multiple domains, many of which are hosted on compromised WordPress sites, suggesting an attempt to obscure the final destination or leverage trusted domains for initial distribution. The presence of external URIs and link farms indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611757f77b657---xijonudipuse.pdf In PDF document text
    • http://mya1fc.com/files/ckuploads/files/fowogotusizitigiduzur.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/32401362780.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/zizupage.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/xafomixizopovezuzixojaxo.pdfIn PDF document text
    • http://gardatrans.com/content/Files/mujugotifaseliwedugora.pdfIn PDF document text
    • http://keitbg.com/images/files/nazowavuv.pdfIn PDF document text
    • http://bowenworktimmins.com/clients/e/ed/ed750a77e36579213b976c45729ba45c/File/fafadatusajimuwerozesufuz.pdfIn PDF document text
    • http://centrons.com/uploaded/file/209315995260d2cb9e28e41.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//67824786275.pdfIn PDF document text
    • https://adikkeempat.com/contents//files/wisaselejasonovosanotiru.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609cbec948c2c---wifegigiwoxabinamutujek.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/a69q9l4ltkn1pp30u5amu981k4/35997855203.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=kavita+tiwari+ki+kavita+pdf+downloadPDF 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_off0000a66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA66D 10428 bytes
SHA-256: 0540155af816ed15b018e9b2def7b978e93df507f0c7b49b451ea6cb4f100ca3
font_01_sfnt_off0000be2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE2C 17472 bytes
SHA-256: 059b16dae77030b62948a57fcc80c00a5e807a6ce008d7fad5dfb4c028b8afe5
font_02_sfnt_off0000eb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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