Malicious PDF — malware analysis report

Static analysis result for SHA-256 09dbd2cd7f600b3c…

MALICIOUS

PDF

84.4 KB Created: 2021-09-03 13:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 105379ca5130bcca7d83d91497d26687 SHA-1: 48754ec2fbe9e5b31e35391d37b575b9ecc059d0 SHA-256: 09dbd2cd7f600b3c64687c0c3321b4007f42b79be24ed387fe63e346d320a5e4
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, designed to lure users into downloading further malicious content. The presence of multiple external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://email-database.info/userfiles/file/50317360296.pdf In PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100da356dc50---gubozonolipe.pdfIn PDF document text
    • http://crocepadrekolbe.it/userfiles/files/zufaxesitubikase.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/6af3772b0be8c1564e932ac4a1f16ee9/dilegewiki.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e11561854d---xobeled.pdfIn PDF document text
    • https://invest.pl/userfiles/file/bidoxewen.pdfIn PDF document text
    • https://kawanmto.net/contents//files/voruwokobap.pdfIn PDF document text
    • http://tfforming.ru/d/files/88483610287.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/70276873411.pdfIn PDF document text
    • http://fedime.org/imagenes/zogalefewozimi.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765c5e7291d---mirusoz.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/ploainidblkvhfm2gsckpj7psf/famizibefij.pdfIn PDF document text
    • http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/82911394857.pdfIn PDF document text
    • https://ahl2005.com/ckfinder/userfiles/files/wilarafuxuduvatikagozan.pdfIn PDF document text
    • https://brickbodysupplements.com/newerac2c/userfiles/file/wukox.pdfIn PDF document text
    • http://bakoca.hu/files/file/zugebedo.pdfIn PDF document text
    • https://belhasasecurity.com/userfiles/file/74691329893.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a0b08d4b6---dizitone.pdfIn PDF document text
    • https://cam-ceeds.org/ckfinder/userfiles/files/lebarak.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/41881619253.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/144872227960fe777e2e64a.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097c6deb8779---83919294621.pdfIn PDF document text
    • http://kingsfinancialconsulting.com/userfiles/file/53824086594.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=mcgraw+hill+math+workbook+grade+7+pdfPDF 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_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 16936 bytes
SHA-256: 8cb10bc4e673af1bfd90c0b0bf324e97c21209ef1985329bf5319cf45781b14d
font_01_sfnt_off000111ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111CE 11156 bytes
SHA-256: 1349a1f1f5689d1940418a29c0ef9c07b25180cc4e268f8fb76b39688d2a6a09
font_02_sfnt_off00012b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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