Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eba1fbd66e00df7…

MALICIOUS

PDF

94.3 KB Created: 2021-09-20 18:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 79ed4463b67a2f6af16113cc22a0a509 SHA-1: 12614fbeead33a52b0d7db2125c7e6b543341312 SHA-256: 1eba1fbd66e00df79b234413c08fb8a09628629be11b8458ae1fb0be9ee480e4
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The 'SE_CLICKFIX' heuristic indicates a social engineering attack where the document likely instructs the user to execute a command, potentially to download and run a secondary payload. The presence of numerous URLs, many pointing to disposable hosting or compromised CMS uploads, further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://bidwoodmachine.com/d/files/gosizupaxorikilupexovira.pdf In PDF document text
    • https://khangle.vn/uploads/images/files/7144595956.pdfIn PDF document text
    • https://architektor.ru/uploads/file/biwujezulajiw.pdfIn PDF document text
    • http://myphamnanyno.com/luutru/files/wilabofuwupizat.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/bekajoronetiron.pdfIn PDF document text
    • http://galettedesrois.eu/userfiles/file/60407398246.pdfIn PDF document text
    • http://sh-songshi.com/admin/upimg/file///80585997115.pdfIn PDF document text
    • https://rosebankprimary.co.za/inc/ckfinder/userfiles/files/23613368943.pdfIn PDF document text
    • http://vuatoyen.com/uploads/userfiles/file/32323297679.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/1f014861bc8985f4d0fd21c83da488ad/48317156642.pdfIn PDF document text
    • https://mongolia-volkslift.com/uploads/files/revud.pdfIn PDF document text
    • http://phone-server.com/userfiles/file/kawazumobo.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/satedavojaxidob.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/mibol.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/161488d15b7983---51467063457.pdfIn PDF document text
    • https://mygrind.ie/userfiles/file/9343145266.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/79465252549.pdfIn PDF document text
    • http://sake2metustin.com/uploads/files/45808941476.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/21642680070.pdfIn PDF document text
    • http://polyalpan.hu/_user/file/dudekilu.pdfIn PDF document text
    • http://thrifthelp.com/flash/thrifthelp.com/file/zeziwome.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/tn1aiagtsi47nr334ujos6eil9/rizurogiranokipekevevux.pdfIn PDF document text
    • http://studiofagiani.eu/userfiles/files/23976081172.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=iron+chest+mod+1.8PDF 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_off00010aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000122bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122BD 18636 bytes
SHA-256: fa0d36febfac48457d336cc7cc1f0b59a8ce33323a1b7c93a426cd2b0f176006
font_02_sfnt_off000153bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153BB 10612 bytes
SHA-256: d40b25a072eeb92fd38375482fcb56749740e0c81b99bc67f93ab04b745af007

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