Malicious PDF — malware analysis report

Static analysis result for SHA-256 464b40369c7d9570…

MALICIOUS

PDF

94.0 KB Created: 2021-08-01 07:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 4a5d700232cda9c6f6ade1fe0ec493d2 SHA-1: 33f1830c32c191ebfd8054ba4fa6f5e05276ab72 SHA-256: 464b40369c7d9570984b43929bb7475178e8d74a2a03b6ce4d82a3c96df5cf6a
164 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs pointing to compromised websites and disposable hosting, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=how+to+use+adobe+acrobat+dc+offline PDF link annotation
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/5052464a30260cf04f9f425090b4b007/9456344534.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/kikusujetilitiguto.pdfIn PDF document text
    • http://pooq-design.com/app/webroot/fckfiles/file/36946354579.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/firelonuvilufuwoxedajojo.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/12775254422.pdfIn PDF document text
    • http://grandviewgroupresort.com/upload/files/zonawi.pdfIn PDF document text
    • http://netmutum.com/userfiles/file/71774212219.pdfIn PDF document text
    • http://ryouhurt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87566073099.pdfIn PDF document text
    • http://lucann.com/Upload/file/jajefilatuliwatikezawij.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aacf3daa14---sabomazamuvisaxixa.pdfIn PDF document text
    • http://35ct1.com/images/ckImageFiles/files/vunimeb.pdfIn PDF document text
    • https://h1t-url12shio-turbo.com/contents//files/30755419295.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/68ab3c05ed0cb3b5a02041eda85e9a8a/daziwolikud.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f6b1d831df7---tulavagasarire.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609dac1c137ee---mewebuzujabibobegon.pdfIn PDF document text
    • http://notarbrazda.cz/userfiles/file/babononilidi.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b42134c5ccf---weposom.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/ad38b8b641cb99dff6d99974d719688c/54866259778.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/5ec1de67ef6768309a26c8e8a6d24e3d/16513815166.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/g80gm7j5td06m248ubn26lcgpa/domilumametizogawig.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/34777786538.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8785af490---73139386565.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/wetepozotozup.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160deb3c4a0f3b---pajafizajawojufej.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8fc30eb5c0---puwinikidatoluv.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_off0001093d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093D 17800 bytes
SHA-256: 07fa4ae0b641973b2cf1b2e3c0f35601b1653ff340a5a76173decdef355d56d4
font_01_sfnt_off00013842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13842 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15059 10788 bytes
SHA-256: 1306aa2dccf9e8694071c133d3c45827f3c7f987c1dc1c7288d2f8dee3337d10

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